BEECHCRAFT DUCHESS 76 Pilot's Operating Handbook and FAA Approved Airplane Flight Manual

7-22 Add "Fuel Seleclor Valves" 7-24 & 7-25 Rearrange Material 7-26 Revise "Battery" 7-27 Revise "Power Distribution Schematic" 7-28 & 7-29 Revise "Allemators" 7-30 Revise "Elcternal Power" 7-31 thru 7-33 Delete "Charts" 7-39 Revise "Pitot System" -7-40 Revise "Static System" 7-41 Revise "Stall Warning" 8-3 Revise "Introduction" 8-4 Revise "Publications" 8-8 thru 8-10 Revise "Prolonged Out-of-Service Care" 8-11 &8-12 Revise "External Power" 8-16 & 8-17 Revise ''Battery'' 8-18 Revise "Shock Siruls" 8-20 Revise "Brakes" 8-26 & 8-27 Revise "Cleaning" 8-46 & 8-47 Revise "Consumable Materials" 8-51 Revise "Bulb Replacement Guide" 8-53 Revise "Overhaul and Replacement Guide" I A2 20f2 Page A BEECHCRAFT Duchess 76 Pilot's Operating Handbook and FAA Approved Airplane Flight Manual A1 Revision ..........................................................March 1979 LOG OF REVISIONS Page Description Title Page Update "A" Page Update 2-12 & 2-13 Revise "Electrical Power" 3-1 Revise "Table of Contents" 3-12 Add "Complete Loss of Electrical Power" 3-12A & 3-12B Rearrange Material 4-1 Revise "Table of Contents" 4·9 & 4-10 Revise "Starting" Procedures 4·10A & 4-10B Rearrange Material A1 Page A - BEECHCRAFT Duchess 76 Pilot's Operating Handbook and FAA Approved Airplane flight Manual A-Original Issue . January 1978 LOG OF REVISIONS Page Description Title Page - "A" Page - a and b - 1-1 Ihru 1-20 - 2-1 Ihru 2-28 - 3-1 Ihru 3-17 - 4-1 thru 4-18 - 5-1 thru 5-47 - 6-1thru6-18 - 7-1 thru 7-41 - 8-1 thru 8-56 - 9-1 and 9-2 - Supplements See Log of Supplements 10-1 thru 10-37 - 1 A Page A - BI. 01 INTRODUCTION The format and contents of this Pilot's Operating Handbook and FAA Approved Airplane Flight Manual conform to GAMA (General Aviation Manufacturers Association) Handbook Specification Number 1. Use of this specification by all.manu- facturers will provide the pilot with the same type of data in the same 'place in all handbooks. Attention is called to Section X (SAFETY INFORMATION). IBEECHCRAFT feels that it is very important to have Safety Information in a condensed form in the hands of the pilots. The Safety Information should be read and studied. Periodic review will serve as a reminder of good piloting techniques. WARNING Use only genuine BEECHCRAFT or BEECHCRAFT approved parts obtained from BEECHCRAFT approved sources, in connection with the maintenance and repair of Beech airplanes. Genuine BEECHCRAFT parts are produced and inspected under rigorous procedures to insure airworthiness and suitability for use in Beech airplane applications. Parts purchased from sources other than BEECHCRAFT, even though outwardly identical in appearance, may not have had the required tests and inspections performed, may be different in fabrication September,1983 a, b BEECHCRAFT Duchess 76 techniques and materials, and may be dangerous when installed in an airplane. Salvaged airplane parts, reworked parts obtained from non-BEECHCRAFT approved sources, or parts, components, or structural assemblies, the service history of which is unknown or cannot be authenticated, may have been subjected to unacceptable stresses or temperatures or have other hidden damage, not discernible through routine visual or usual nondestructive testing techniques. This may render the part, component or structural assembly, even though originally manufactured by BEECHCRAFT, unsuitable and unsafe for airplane use. BEECHCRAFT expressly disclaims any responsibility for malfunctions, failures, damage or injury caused by use of non-BEECHCRAFT approved parts .. September, 1983 ( DUCHESS 76 PILOT'S OPERATING HANDBOOK AND FAA APPROVED AIRPLANE FLIGHT MANUAL . TABLE OF DIVISIONS SECTION I ............................................................ GENERAL SECTION II.·..................................................... LIMITATIONS SECTION III .......................... EMERGENCY PROCEDURES SECTION IV ................................. NORMAL PROCEDURES SECTION V ................................................PERFORMANCE SECTION Vi ................................. WEIGHT AND BALANCE! EQUIPMENT LIST SECTION VII ............................... SYSTEMS DESCRIPTION SECTION VIII ................................ HANDLING, SERVICING AND MAINTENANCE SECTION IX ................................................ SUPPLEMENTS SECTiON X ...................................SAFETY INFORMATION September, 1983 c d BEECHCRAFT Duchess 76 INTENTIONALL V LEFT BLANK September, 1983 - - BEECHCRAFT Duchess 76 SUBJECT SECTION I GENERAL TABLE OF CONTENTS PAGE Important Notice .: ............................................................. 1·3 Use of the Handbook ........................................................ 1-4 Revising the Handbook ..................................................... 1-6 Airplane Flight Manual Supplements Revision Record .......................................................... 1-6A Vendor-Issued STC Supplements .................................. 1-6A Airplane Three View .......................................................... 1-7 Ground Turning Clearance ............................................... 1-8 DESCRIPTIVE DATA ....................................................... 1-9 Engines ......................................................................... 1-9 Propellers ...................................................................... 1-9 Fuel ............................................................................. 1-10 OiL ............................................................................... 1-10 Maximum Certificated Weights .................................... 1-10 Standard Airplane Weights .......................................... 1-11 Cabin and Entry Dimensions ....................................... 1-11 Baggage Space and Entry Dimensions ....................... 1-11 Specific Loadings ......................................................... 1-11 SYMBOLS, ABBREVIATIONS, AND TERMINOLOGY... 1-11 Airspeed Terminology ................................................. 1-12 Meteorological Terminology ........................................ 1-14 Power Terminology .......................................... ,.......... 1-15 Engine Controls and Instruments Terminology ............ 1-16 Airplane Performance and Flight Planning Terminology .............................................. 1-17 Weight and Balance Terminology ................................ 1-18 September, 1983 1-1 Section I General 1-2 BEECHCRAFT . Duchess 76 INTENTIONALLY LEFT BLANK August, 1980 BEECHCRAFT Duchess 76 THANK YOU __ _ Section I General for displaying confidence in us by selecting a BEECHCRAFT airplane. Our design engineers, assemblers, and inspectors have utilized their skills and years of experience to ensure that the new BEECHCRAFT meets the high standards of quality and performance for which BEECHCRAFT airplanes have become famous throughout the world. IMPORTANT NOTICE This handbook should be read carefully by the owner and the operator in order to become familiar with the operation of the airplane. Suggestions and recommendations have been made within it to aid in obtaining maximum performance without sacrificing economy. Be familiar with, and operate the airplane in accordance with, the Pilot's Operating Handbook and FAA Approved Airplane Flight Manual, and/or placards which are located in the airplane. As a further reminder, the owner and the operator should also be familiar with the Federal Aviation Regulations appli- cable to the operation and maintenance of the airplane, and FAR Part 91, General Operating and Flight Rules. Further, the airplane must be operated and maintained in accordance with FAA Airworthiness Directives which may be issued against it. The Federal Aviation Regulations place the responsibility for the maintenance of this airplane on the. owner and the operator, who should ensure that ail maintenance is done by qualified mechanics in conformity with all airworthiness re- quirements established for this airplane. All limits, procedures, safety practices, time limits, servicing, and maintenance requirements contained in this handbook April .1979 1-3 Section I General BEECHCRAFT Duchess 76 are considered mandatory for continued airworthiness to maintain the airplane in a condition equal to that of its original manufacture. Authorized BEECHCRAFT Aero or Aviation Centers or International Distributors or Dealers can provide recommended modification, service, and operating procedures issued by both the FAA and Beech Aircraft Corporation, which are designed to get maximum utility and safety from the airplane. USE OF THE HANDBOOK The Pilot's Operating Handbook is designed to facilitate maintaining the documents necessary for the safe and effi- cient operation of the airplane. The handbook has been prepared in loose leaf form for ease in maintenance and in a convenient size for storage. The handbook has been ar- ranged with quick reference tabs imprinted with the title of each section and contains ten basic divisions. 1-4 Seciion 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10 General Limitations. Emergency Procedures Normal Procedures Periormance Weight and Balance/Equipment List Systems Descripti"on Handling, Servicing, and Maintenance Supplements Safety Information August, 1980 - BEECHCRAFT Duchess 76 Section I General NOTE The owner/operator should always refer to all supplements, whether STC Supplements or Beech Supplements, for possible placards, limitations, normal, emergency and other operational procedures for proper operation of the airplane with optional equipment installed. The following information may be provided to the holder of this manual automatically: 1. Original issues and revisions of Class I and Class " Service Instructions 2. Original issues and revisions of FAA Approved Airplane Flight Manual Supplements 3. Reissues and revisions of FAA Approved Airplane Flight Manuals, Flight Handbooks, Owner's Manuals, Pilot's Operating Manuals, and Pilot's Operating Handbooks This service is free and will be provided only to airplane owners who are listed on the FAA A ircraft Registration Branch List or the BEECHCRAFT International Owners Notification Service List, and then only if listed by airplane serial number for the model for which this handbook is applicable. For detailed information on how to obtain "Revision Service" applicable to' this handbook or other BEECHCRAFT Service Publications consult any BEECHCRAFT Aero or Aviation Center, International Distributor, or International Dealer, or refer to the latest revision of BEECHCRAFT Service Instructions No. 0250-010. September, 1983 1-5 Section I General BEECHCRAFT Duchess 76 Due to the large variety of airplane configura- tions available through optional equipment, it should be noted that where information pertain- ing to optional equipment appears in the hand, book, the optional equipment will not normally be designated as such. Due to custom design varia- tions, the illustrations in this handbook will not be typical of every airplane. Beech Aircraft Corporation expressly reserves the right to supersede, cancel, and/or declare obsolete, without prior notice, any part, part number, kit, or publication that may be refer- enced in this handbook. REVISING THE HANDBOOK Immediately following the Title Page is the "Log of Revi- sions" page(s). The Log of Revisions pages are used for maintaining a listing of all effective pages in the handbook (except the SUPPLEMENTS section), and as a record of revisions to these pages. In the lower right corner of the outlined portion is a box containing a capital letter which denotes the issue or reissue of the handbook. It will be advanced one letter, alphabetically, per reissue. This letter will be suffixed by a number whenever the handbook is revised. When a revision to the handbook is made, a new Log of Revisions will be issued. All Logs of Revisions must be retained in the handbook to provide a complete record of material status until a reissue is made. September, 1983 - BEECH CRAFT Duchess 76 Section I General WARNING When this handbook is used for airplane opera- tional purposes it is the pilot's responsibility to maintain it in current status. AIRPLANE FLIGHT MANUAL SUPPLEMENTS REVISION RECORD Section IX contains the FAA Approved Airplane Flight Man- ual Supplements headed by a Log of Supplements page. On the "Log" page is a listing of the FAA Approved Supplemen- tal Equipment available for installation on the airplane. When new supplements are received or existing supplements are revised, a new "Log" page will replace the previous one, since it contains a listing of all previous approvals, plus the new approval. The supplemental material will be added to the grouping in accordance with the descriptive iisting. NOTE Upon receipt of a new or revised supplement, compare the "Log" page just received with the existing "Log" page in the manual. Retain the "Log" page with the latest date on the bottom of the page and discard the other log. VENDOR-ISSUED STC SUPPLEMENTS When a new airplane is delivered from the factory, the handbook delivered with it contains either an STC (Supplemental Type Certificate) Supplement or a Beech F!ight Manual Supplement 'for every instalied item requiring a supplement. If a new handbook for operation of the airplane is obtained at a later date, it is the responsibility of the owner/operator to ensure that all required STC Supplements (as well as weight and balance and other pertinent data) are transferred into the new handbook. September, 1983 1-6A Section I General 1-68 8EECHCRAFT Duchess 76 INTENTIONALLY LEFT BLANK August, 1980 - BEECHCRAFT Duchess 76 .. o o J .. WING AREA: 181 SQ. FT. = 1-----J-85" APPROX. THREE-VIEW January 1978 Section I General 76" DIA. ~l 76.607.4 1-7 Section I General BEECHCRAFT Duchess 76 GROUND TURNING CLEARANCE @ Radius for Wing Tip ................... 27 feet 2 inches @ Radius for Nose Wheel. ............. ' 9 feet 10 inches © Radius for Inside Gear ...-................. 3 feet 1 inch @ Radius for Outside Gear ........... 13 feet 8 inches TURNING RADII ARE PREDICATED ON THE USE OF PARTIAL BRAKING ACTION AND DIFFERENTIAL POWER. 1·8 January 1978 - - BEECHCRAFT Duchess 76 DESCRIPTIVE DATA ENGINES Section I General Two Avco Lycoming engines are installed; One 0-360- A 1G6D (clockwise rotating) located on the 1E'1t wing, and one LO-360-A 1G6D (counterclockwise rotating) located on the right wing. The engines are four-cylinder, direct-drive, hori- zontally opposed, and each rated at 180 horsepower at 2700 rpm. Take-off and Maximum Continuous Power . . . . . Full throttle, 2700 rpm Recommended Maximum Cruise Power. . . . . . . . . . . 24 in. Hg, 2700 rpm PROPELLERS The airplane is equipped with two Hartzell, constant-speed, full-feathering, two-blade propellers: the left engine (clock- wise rotating) has an HC-M2YR-2CEUF hub with FC 7666A blades and a C2285-3P spinner; the right engine (cDun- terclockwise rotating) incorporates an HC-M2YR-2CLEUF hub with FJC l666A blades and a C2285-3LP spinner. Pitch settings at the 30 inch station: Low, 12.1° ± .1°; High, 17° to 20°; Feathered, 81° ± 1°. Diameter is 76 inches, with cut-off permitted to 74.0 inches. January 1978 1-9 Section I General FUEL . BEECHCRAFT Duchess 76 Aviation Gasoline, grade 100 (green) or grade 100 LL (blue). Total Capacity Total Usable . OIL ·103 gallons 100 gallons Engine oils must meet Aveo Lycoming Specification No. I 301 F and be used in accordance with Avco Lycoming Service Instructions No. 1014J or subsequent revisions. Refer to HANDLING, SERVICING, AND MAINTENANCE I section for a list of oils meeting this specification. Average Ambient MIL-L-6082 MIL-L-22851 Air Temperature Grades Ashless Dispersant Grades Above 60 F SAE 50 SAE 40. or SAE 50 30 0 to 90°F SAE 40 SAE 40 0 0 to 70°F SAE 30 SAE 40, SAE 30 or SAE 20W40 Below 10°F SAE 20 SAE 30 or SAE 20W30 Oil Capacity ........................................... 8 quarts each engine MAXiMUM CERTIFICATED WEIGHTS MaximumHamp Weight . Maximum Take-off Weight Maximum Landing Weight Maximum Zero Fuel Weight 39161bs 3900lbs 3900lbs 3500lbs Maximum Weight in Baggage Compartment . 200lbs 1-10 September, 1983 BEECHCRAFT Duchess 76 STANDARD AIRPLANE WEIGHTS Standard Empty Weight Maximum Useful Load . CABIN AND ENTRY DIMENSIONS Cabin Width (maximum) . Cabin Length (maximum) Cabin Height (maximum) . Cabin Door .. Door Sill Height . . . . Section I · General 24461bs 1470lbs · 3lt8in. 7 It 11 in. · . . 4 It 36 in. x 38 in. 2in. BAGGAGE SPACE AND ENTRY DIMENSIONS , Compartment Volume . . . . Compartment Width (nominal) Compartment Length (nominal) Compartment Height (nominal) Door Width (minimum) . Door Height (minimum) SPECIFIC LOADINGS· 19.5cult 38in. 26 in. 37in. 22 in. 33 in. Wing Loading at Maximum Take-off Weight. . 21.5Ibs/sq It Power Loading at Maximum Take-off Weight 10.8 Ibs/hp SYMBOLS, ABBREViATiONS, AND TERMINOLOGY The following Abbreviations and Terminologies have been listed for convenience and ready interpretation where used within this handbook. Whenever possible, they have been categorized for ready reference. January 1978 1-11 Section I General BEECHCRAFT Duchess 76 AIRSPEED TERMINOLOGY lAS CAS TAS GS 1-12 I ndicated Airspeed is the speed of an airplane as shown on its airspeed indi- cator. As used within this handbook lAS assumes no instrument error. Calibrated Airspeed is the indicated air- speed of an airplane, corrected for posi- tion and instrument error. Calibrated airspeed is equal to true airspeed in standard atmosphere at sea level. True Airspeed is the airspeed of an air- plane relative to undisturbed air which is the CAS corrected for altitude, tem- perature, and compressibility. Ground Speed is the speed 01 an air- plane relative to the ground. Air Minimum Control Speed is the minimum flight speed at which the air- plane is directionally controllable as de- termined in accordance with Federal Aviation Regulations. The airplane cer- tification conditions include one engine becoming inoperative and windmilling, a 5-degree bank towards the operative engine, take-off power on operative en- gine, landing gear up, flaps in take-off position, and most rearward C.G .. For some conditions of weight and altitude, stall can be encountered at speeds above YMCA as established by the cer- tification procedure described above, in which event stall speed must be re- garded as the limit of effective direc- tional control. January 1978 BEECH CRAFT Duchess 76 April 1979 Section I General The Intentional One-Engine- Inoperative Speed is a speed above both YMCA and stall speed, selected to provide a margin of lateral and direc- . tional control when one engine is sud- denly rendered inoperative. Intentional failing of one engine below this speed is not recommended. I Maneuvering Speed is the maximum speed at which application of full avail- able aerodynamic control will not over- stress the airplane. Design Flap Speed is the highest speed perrnissible at which wing flaps may be actuated. Maximum Flap Extended Speed is the highest speed permissible with wing flaps in a prescribed extended position. Maximum Landing Gear Extended Speed is the maximum speed at which an airplane can be safely flown with the landing gear extended. Maximum Landing Gear Operating Speed is the maximum speed at which the landing gear can be safely ex- tended or retracted. Never Exceed Speed is the speed limit that may not be exceeded at any time. 1-13 Section I General Vso Vy BEECHCRAFT Duchess 76 Maximum Structural Cruising Speed is the speed that should not be exceeded except in smooth air and then only with caution. Stalling Speed or the minimum steady flight speed at which the airplane is controllable. Stalling Speed or the minimum steady flight speed at which the airplane is controllable in the landing configura- tion. Best Angle-of-Climb Speed is the air- speed which delivers the greatest gain of altitude in the shortest possible hori- zontal distance. Best Rate-Ot-Climb Speed is the air- speed which delivers the greatest gain in altitude in the shortest possible time. METEOROLOGICAL TERMINOLOGY ISA 1-14 International Standard Atmosphere in which: (1) The air is a dry perfect gas; (2) The temperature at sea level is 15° Celsius (59° Fahrenheit); (3) The pressure at sea level is 29.92 in. Hg (1013.2 millibars); (4) The temperature gradient from sea level to the altitude at which the temperature is - 56Se ( - 69. 7'F) is - 0.00198°e ( - 0.003566°F) per foot and zero above that altitude. January 1978 BEECHCRAFT Duchess 76 OAT Indicated Pressure Altitude Pressure Altitude Station Pressure Wind Section I General Outside Air Temperature is the free air static temperature, obtained either from inflight temperature indications ad- justed for instrument error and com- pressibility effects, or ground meteorological sources. The number actually read from an altimeter when the barometric subscale has been set to 29.92 in. Hg (1013.2 millibars). I Altitude measured from standard sea level pressure (29.92 in. Hg) by a pressure or barometric altimeter. It is the indicated pressure altitude corrected for position and instrument error. In this handbook, altimeter instrument errors are assumed to be zero. Position errors may be obtained Ifrom the Altimeter Correction graph. Actual atmospheric pressure at field elevation. The wind velocities recorded as. vari- ables on the charts of this handbook are to be understood as the headwind or tailwind components of the reported winds. POWER TERMINOLOGY Take-off and Maximum Continuous Cruise Climb April 1979 Highest power rating not limited by time. Power recommended for cruise climb. 1-15 Section I General BEECHCRAFT Duchess 76 ENGINE CONTROLS AND INSTRUMENTS TERMINOLOGY Throttle Control Propeller Control Mixture Control Tachometer Propeller Governor Manifold Pressure EGT 1-16 The lever used to control power by in- troducing fuel-air mixture into the intake passages of the engine. Settings are reflected by readings on the manifold pressure gage. This lever requests the gave mar to maintain rpm at a selected value and, in the maximum decrease rpm position, feathers the propeller. This lever is used to set fuel flow in all modes of operation and cuts off fuel completely for engine shutdown. Indicates the rotational speed of the en- gine/propeller in revolutions per minute (rpm). Regulates the rpm of the engine/propel- ler by increasing or decreasing the pro- peller pitch through a pitch change rnechanisrn in the propeller hub. An instrument that measures the abso- lute pressure in the intake manifold of an engine, expressed in inches of rner- cury (in. Hg). The Exhaust Gas Temperature I ndi- cator is used to identify the lean and best-power fuel flow mixtures for vari- ous power settings during cruise. January 1978 - BEECHCRAFT Duchess 76 Section I General AIRPLANE PERFORMANCE AND FLIGHT PLANNING TERMINOLOGY Climb Gradient Demonstrated Crosswind Velocity Accelerate- Stop Distance Accelerate- Go Distance MEA Route Segment September, 19B3 The ratio of the change in height during a portion of a climb, to the horizontal distance traversed, in the same time interval. The demonstrated crosswind velocity is the velocity of the crosswind component for which adequate control of the airplane during takeoff and landing was actually demonstrated during certification tests. The value I shown is not limiting. The distance required to accelerate an airplane to a specified speed and, as- suming failure of an engine at the in- stant that speed is attained, to bring the airplane to a stop. The distance required to accelerate an airplane to a specified speed and, as- suming failure of an engine at the in- stant that speed is attained, feather in- operative propeller and continue takeoff on the remaining engine to a height of 50 feet. Minimum Enroute IFR Altitude. A part of a route. Each end of that part is identified by: (1) A geographical location; or (2) .A point at which a definite radio fix can be established. 1-17 Section I General BEECHCRAFT Duchess 76 WEIGHT AND BALANCE TERMINOLOGY Standard Empty Weight Basic Empty Weight Usable Fuel Unusable Fuel Payload Useful Load Maximum Ramp Weight Maximum Take-Off Weight Maximum Landing Weighi Maximum Zero Fuel Weight 1-18 • Weight of a standard airplane including unusable fuel, full operating fluids, and full oil. . Standard empty weight plus optional equipment. Fuel available for flight planning. Fuel remaining after a runout test has been completed in accordance with governmental regulations. Weight of occupants, cargo, and baggage. Difference between ramp weight and basic empty weight. Maximum weight approved for ground maneuvering. (It includes weight of start, taxi, and run-up fueL) Maximum weight approved for the start of the take-off run. Maximum weight approved for the land- ing touchdown. Maximum weight exclusive of usable fuel. January 1978 - BEECHCRAFT Duchess 76 Loading Condition Reference Datum Station Arm Moment Airplane Center of Gravity (CG) CG Arm CG Limits January 1978 Section I General That combination of airplane weight and corresponding moment applicable to the various loadings computed for weight and balance purposes. An imaginary vertical plane from which all· horizontal distances are measured for balance purposes. A location along the airplane fuselage usually given in terms of distance from the reference datum. The horizontal distance from the refer- ence datum to the center 01 gravity (CG) of an item. The product of the weight of an item multiplied by its arm. (Moment divided by a constant is used to simplify ba- lance calculations by reducing the number of digits.) The point at which an airplane would balance if suspended. Its distance from the reference datum is found by divid- ing the total moment by the total weight of the airplane. The arm obtained. by adding the air- plane's individual moments and divid- ing the sum by the total weight. The extreme center of gravity locations within which the airplane must be oper- ated al a given weight. 1-19 Sectionl General Tare Leveling Points Jack Points 1-20 BEECHCRAFT Duchess 76 The apparent weight which may be indi- cated by a scales before any load is applied. Those points which are used during the weighing process to level the airplane. Points on the airplane identified by the manufacturer as suitable for supporting the airplane for weighing or other pur- poses. January 1978 BEECHCRAFT Duchess 76 Section" Limitations The limitations included in this section have been approved by the Federal Aviation Administration. The following limitations in this section must be observed in the operation of this airplane'. AIRSPEED LIMITATIONS SPEED CAS lAS REMARKS KTS KTS Never Exceed 194 194 Do Not Exceed This Speed in VNE Any Operation. Maximum 154 154 Do Not Exceed This Speed Ex- Structural cept in Smooth Air and Then Cruising Only With Caution. VNO Maneuvering 132 132 Do Not Make Full or Abrupt VA Control Movements Above This Speed. Maximum Flap 110 110 Do Not Extend Raps or Oper- Extension/Extended ate With Flaps Extended VF and VFE Above This Speed. (Full Down 35°) Maximum 140 140 Do Not Exceed This Speed Landing Gear With Landing Gear Extended. Extended VLE Maximum Do Not Extend or Retract Landing Gear Landing Gear Above This Operating VLO Speed. Extension 140 140 Retraction 113 112 Air Minimum 67 65 Minimum Speed for Directional Control Controllability AHer Sudden VMCA Loss of Engine. January 1978 2-3 Section 1\ Limitations 'AIRSPEED INDICATOR MARKINGS MARK- CAS VALUE lAS VALUE ING OR RANGE OR RANGE KTS KTS White Arc 58-110 60-110 Blue Radial 86 85 Red Radial 67 65 Green Arc 68-154 70-154 Yellow AIe 154-194 154·194 Red Radial 194 194 BEECHCRAFT Duchess 76 SIGNIFICANCE Full Flap Operating Range Single-Engine Best Rate- of-Climb Minimul]l Single-Engine Control (VMCA) Normal Operat- ing Range Operate With Caution, Only In Smooth Air Maximum Speed For All Operations (Never Exceed) "The airspeed indicator is marked in lAS values. POWER PLANT liMiTATIONS ENGINES Two Avco Lycoming engines installed; one 0-360-A1G60 (clockwise rotating) located on the left wing, and one LO-360- A 1G6D (counterclockwise rotating) located on the right wing. The engines are four-cylinder, direct-drive, horizontally opposed, and each rated at 180 horsepower at 2700 rpm. Take-off and Maximum Continuous Power ......................... Full Throttle, 2700 RPM Maximum Oil Temperature ........................................... 245°F Maximum Cylinder Head Temperature ......................... 500°F 2-4 October 1979 - BEECHCRAFT Duchess 76 Section II Limitations Minimum" Oil Pressure (Idle) .......................................... 25 psi Maximum Oil Pressure ................................................ 100 psi Minimum Fuel Pressure ............................................... 0'.5 psi Maximum Fuel Pressure .............................................. 8.0 psi FUEL Aviation Gasoline, grade 100 (green) or grade 100 LL (blue). FUEL ADDITIVES ALCOR TCP Concentrate, mixed according to the instructions provided by Alcor, Inc. OIL Engine oils must meet Avco Lycoming Specification No. 301 F and be used in accordance with Avco Lycoming IService Instruction No.1 014J or subsequent revisions. Refer to the Approved Engine Oils, Section VIII, SERVICING. PROPELLERS Two Hartzell, constant-speed, full-feathering, two-blade pro- pellers: the left engine (clockwise rotating) has an HC-M2YR- 2CEUF hub with FC 7666A blades and C2285-3P spinner; the right engine (counterclockwise rotating) incorporates an HC-M2YR-2CLEUF hub with FJC 7666A blades and a C22B5-3LP spinner. Pitch settings at the 3D-inch station: Low, 12.1° :t .1°; High, 1r to 20°; Feathered, B1 ° :t 10. Diameter is 76 inches, with cut-off permitted to 74.0 inches. September, 1983 2-5 Section II Limitations BEECHCRAFT Duchess 76 POWER PLANT INSTRUMENT MARKINGS Oil Temperature Caution Range (Yellow Arcl ..................................60to 120'F Normal Operating Range (Green Arc) ................. 120 to 245'F Maximum (Red Radial) ................................................. 245'F Oil Pressure Minimum Idle (Red Radial) ............................................ 25 psi· Caution Range (Yellow Arc) .................................. 25 to 60 psi Normal Operating Range (Green Arc) ................. 60 to 100 psi Maximum (Red Radial) ............................................... 100 psi Manifold Pressure Normal Operating Range (Green Arc) ........... 15 to 29.6 in. Hg Tachometer Normal Operating Range (Green Arc) ............ :................................ 2000 to 2700 rpm Maximum (Red Radial) ............................................ 2700 rpm Fuel Pressure Minimum (Red Radial) ................................................. 0.5 psi Normal Operating Range (Green Arc) ................. 0.5 to 8.0 psi Maximum (Red Radial) ................................................ 8.0 psi Cylinder Head Temperature Normai Operating Range (Green Arc) ................ .200 to 500°F Maximum (Red Radial) ................................................. 500°F MISCELLANEOUS INSTRUMENT MARKINGS Instrument Pressure Normal Operating Range (Green Arc) ............ 4.3 to 5.9 in. Hg Red Button Source Failure Indicators 2-6 January 1978 BEECHCRAFT Duchess 76 Fuel Quantity Section II Limitations Yellow Arc ......................................................... E to 9 Gallons WEIGHT LIMITS Maximum Ramp Weigh!... ........................... : ............. 39161bs Maximum Take-off Weight ........................................ 3900 Ibs Maximum Landing Weight ........................................ 3900 Ibs Zero Fuel Weight ...................................................... 3500 Ibs Maximum Baggage Compartment Load ..................... 200 Ibs CENTER OF GRAVITY (Landing Gear Extended) Forward Limits: 106.6 inches aft of datum at 3250 Ibs and under, then straight line variation to 110.6 inches aft of datum at a weight of 3900 Ibs. Aft Limit: 117.5 inches aft of datum a,I all weights. Reference Datum: 129.37 inches forward of the center of wing spar jack points. MAC Leading Edge: 99.08 inches aft of datum. MAC Length: 57.65 inches. MAt-JEUVEAS This is a normal category airplane. Acrobatic maneuvers, including spins, are prohibited. Maximum slip duration ......................................... 30 seconds January 1978 2-7 Section II Limitations FLIGHT LOAD FACTORS (3900 POUNDS) Positive maneuvering load factors: BEECHCRAFT Duchess 76 Flaps Up .................................................................... 3.8G Flaps Down (ON) ........................................................ 2.0G Negative maneuvering load factor: Flaps Up ................................................................ -1 .52G MINIMUM FLIGHT CREW ....................................... One pilot KINDS OF OPERA nON This airplane is approved for the following type operations when the required equipment is installed and operationill as defined herein: 1. VFR day and night 2. IFR day and night 3. FAR 91 operations when all pertinent limitations and performance considerations arF' "nmnlied with. WARNING FLIGHT IN ICiNG CONDITIONS PROHIBITEU. 2-8 January 1978 - BEECHCRAFT Duchess 76 FUEL Section Ii limitations TOTAL FUEL with left and right wing fuel systems full: Capacity.............................................................. 103 gallons· Usable ................................................................. 100 gallons 'Value given is nominal. Tank capacity will vary with temper- ature, and manufacturing tolerances. FUEL MANAGEMENT Do not take off when Fuel Quantity indicators indicate in the yellow band on either indicator. Maximum slip duration is 30 seconds. The fuel crossfeed system to be used during emergency conditions in level flight only. SEATING All occupied seats must be in the upright position for takeoff and landing. STRUCTURAL LIFE The basic wing structure has a substantiated life of 20,000 flight hours provided the mandatory inspection requirements of chapter four of the BEECHCRAFT DUCHESS 76 MAINTENANCE MANUAL are complied with. September, 1983 2-9 Section II limitations BEECHCRAFT Duchess 76 REQUIRED EQUIPMENT FOR VARIOUS CONDITIONS Or: FLIGHT Part 91 of the Federal Aviation Regulations specifies minimum numbers and types of airplane instruments and equipment which must be installed and operated for various kinds of flight conditions. This includes VFR day, VFR night, IFR day and IFR night. Regulations also require that all airplanes be certified by the manufacturer for operations under various flight conditions. At certification, all required equipment must be in operating condition and should be maintained to assure continued air- worthiness: If deviations from the installed equipment were not permitted, or if the operating rules did not provide for various flight conditions, the airplane could not be flown unless all equipment were operable. With appropriate limita- tions, the operation of every system or component installed in the airplane is not necessary when the remaining operative instruments and equipment provide for continued safe opera- tion. Operation in accordance with limitations established to maintain airworthiness can permit continued or uninterrupted operation of the airplane. For the sake of brevity, the Required Equipment Listing does not include obviously required items such as wings, rudder, flaps, engines, landing gear, etc. Also the list does not include items which do not affect the airworthiness of the airplan'e such' as entertainment systems, passenger convenience items, etc. However, it is important to note that ALL ITEMS WHICH ARE RELATED TO THE AIRWORTHINESS OF THE AIRPLANE AND NOT' INCLUDED ON THE LIST ARE AUTOMATICALLY REQUIRED TO BE OPERATIVE. 2-10 September, 1983 BEECHCRAFT Duchess 76 Section II Limitations To enable the pilot to rapidly determine the FAA equipment requirements necessary for a flight into specific conditions, the following equipment requirements and exceptions are presented. It is the final responsibility of the pilot to determine whether the lack of, or inoperative status of a piece of equip- 'ment on the airplane, will limit the conditions under which the pilot may operate the airplane. LEGEND Numbers refer to quantities required to be operative for a specified condition, (-) Indicates that the item may be inoperative for the specified condition. (*) Refers to the REMARKS AND/OR EXCEPTIONS col- umn for explicit information or reference, September, 1983 2-11 I\) ,~ I\) r.n~ "'C IV 3 l5-., ... '" 0> w I I I I SYSTEM and/or COMPONENT GENERAL OVERWATER FLIGHT COMMUNICATIONS VHF communications system ELECTRICAL POWER Battery system DC alternator DC loadmeter VFRDay VFRNight IFRDay IFRN!JLhl Remarks and/or Exceptions • . . . . 'Per FAR 91 • . . • - 'Per FAR 91 1 1 1 1 - 2 2 2 2 - 2 2 2 2 - I I 1 C&'3 0 - ... ... - III 0 ::':1 0_ :I - (II l1J m om c 0 o ::t ::TO ~ :u '" ,.~:!l I U'J Alternator-out overvoltage 2 2 2 2 om <P -c indicator light em - om <P :To 3 Alternator-out undervoltage 2 2 2 2 <P ::t i indicator light g: 0 -~ --Ill ~ Starter Engaged Warning Light 1 1 1 - May be inoperative provided OIl> <l) ~ Ct> (ME-333, ME-346 and after) loadmeters are operative '" and monitored. I EQUIPMENT AND FUFlNISHINGS Seat belts and II shoulder harnesses 1 ~ 1 1 1 1- Per Person or Per FAR 91 Emergency locator transmitter 1 1 1 - Per FAR 91 I FIRE PROTECTION c: Portable fire extinguisher I " I" I • I .r 'Optional I 3 U'J -ID -0 III _ N - _.-0 , o ~ ~ '" ~ .. = I\) , --"" en(II i3 g =' -" co CD Co> I SYSTEM and/or COMPONENT FLIGHT CONTROLS Trim tab indicators - Rudder Elevator Flap position indicator Stall warning system VFRDay VFRNight 1 1 1 1 1 1 1 1 1 1 I ay IFRNi ht Remarks and/or Exceptions 1 May be inoperative provided 1 that tabs are visually checked in the neutral position prior to each takeoff and checked for full range of operation. 1 - May be inoperative provided flap travel is visually inspected prior ·to takeoff. 1 - Cff3 0 -- --. 1110 ~::J o ::J en III m omcoo :I: ~o 1D::u Ill,. 01:!1 I Ul I OtD <1> em"C om - FUEL EQUiPMENT ~n <1> 3 <1> ::J: f{ l:l n Engine driven fuel pump 2 2 2 2 "-Ill -"" Ql):. ~ Electrically driven aux fuel pump 2 2 2 2 :!I co(XI Fuel quantity indicator 2 2 2 2 One may be inoperative provided c..> other side is operational and amount of fuel on board can be established to be adequate for the intended flight. Fuel pressure indicator 12 12 1 2 1 21- I I liCE AND RAIN PROTl;CTION Alternate static air 1 ~ 1 ~ 1 ~ 1 1 1- r source 3 Ul Pitot heater 1 - -CD -0 DI _ --'" ) 1 1 1 1 1 -·0 , o " ~ " '" en = '"•....0) en<D "C it 3 g- o'" ....<0 co Col I I SYSTEM and/or COMPONENT LANDING GEAR Landing gear motor Landing gear position lights Landing gear warning horn LIGHTS Cockpit and instrument lights Taxi Light (2) VFRDay VFRNight /FRDay IFRNight Remarks and/or Exceptions 1 1 1 1 4 4 4 4 1 1 1 1 - , - , - 'Lights must be operative - - - - cg> 3 0 ;::;~ III C ='::1 C _ ;, -en IJ] m om c:: 0 o :J: :To m lJ en » Ql:!l I (fl I Landing lig~lt (1) o III " 'Per FAR 91 c: m "C om .. Strobe light 2 • 2 'Optional " ::TO 3 Position light 3 3 ~ :t e- '" 0 " ....,:0 .:' I "'l> .... "TJ <0 NAVIGATION INSTRUMENTS -I CD '" Altimeter 1 1 1 1 Airspeed indicator 1 1 1 1 Vertical speed Magnetic compass 1 1 1 1 Attitude indicator 1 1 Turn and slip indicator 1 1 Directional gyro 1 1 Clock 1 1 - II Transponder • 'Per FAR 91 Navigation equipment • • 'Per FAR 91 r 3"cn -" "0 III .. .. -r-> -0 , g ::I ........, "'= '",....0:> Vl CD "t:l CD 3 g- ., ....ID co W II II I SYSTEM and/or COMPONENT PNEUMATIC Pressure system for instrument air Pressure gage ENGINE INDICATING INSTRUMENTS Engine tachometer indicator Exhaust gas temperature indicator VFROay VFRNight /FROay /FRNight Remarks and/or Exceptions - - 1 1 - - - 1 1 - 2 2 2 2 - . . . . - 'Optional 1 I I cg> 3 0 _. -- - II> 0 !::J 0- :J - (/) til m em<:(") o :r:7() ~lJ (/) J> ~2/ BEECHCRAFT Duchess 76 NN N N NN NN (f) I- Z w :E ~ c: I- (f) Z ~ 5 w z -C!l z w September, 19$~ NN NN NN NN ~ o roo .~ --0 ~ c '5 (l) c ~ ::J (l)- ~ ro ::J ~ (J) '" (J) 0. (l) E~ (l) 0.- 66 Section 1/ Limitations 2-19 Section II limitations BEECHCRAFT Duchess 76 INTENTIONALLY LEFT BLANK 2-20 September, 1983 - - BEECHCRAFT Duchess 76 Section" Limitations PLACARDS On Left Cabin Door (ME-/ thru ME-282, ME-284 thru IME-286J or On Left Cabin Sidewall (ME-283, ME-287 and after): . rr: --- OPERATION LIMITATIONS --- THIS AIRPLANE MUST BE OPERATED AS A NORMAL CATEGORY AIRPLANE IN COMPLIANCE WITH THE OPERATING LIMITATION SlATED IN THE FORM Of PLACARDS, MARKINGS AND MANUALS. MAXIMUM WEIGHT IS 3900 las. THIS AIRPLANE APPROVED FOR VFR. IFR, DA Y AND NIGHT NON-ICING HIGHT WHEN EOUIPPED IN ACCORDANCE WITH FAR 91 OR FAR 135. NO ACROBATIC MANEUVERS INCLUDING SPINS APPROVED, WARNING - TURN oFF STROBE LIGHTS WHEN TAXIING IN VICINITY OF OTHER AIRCRAFT OR DURING fLIGHT THROUGH CLOUD, FOG DR HAZE. ------ AIRSPEEDS ------ NEVER EXCEED -------------------- 194 KNOTS MAX. STRUCTURAL CRUISE ------------- 154 KNOTS MAX. MANEUVERING ---------------- 132 KNOTS MAX. FLAPS 20° - __________________ 120 KNOTS MAX. FUll DOWN FLAPS J5 c ----------- 110 KNOTS MAX. lANDING GEAR EXTENSION ---------140 KNOTS MAX. lANDING GEAR RETRACTION -------- IlJ KNOTS ALTITUDE LOST IN ONE ENGINE ]NOP STAll - ____ 150 FEET & 10° PITCH DOWN Lower Sidewall Adjacent to Pilot: WARNiNG ALTERNATE STATIC AIR SOURCE ON ALTERNATE SEE PERFORMANCE SECTION OF P!LOTS OPERATING HANDBOOK FOR AIRSPEED & ALTIMETER CALIBRATION ERROR L! October 1979 OFF (i) I NORMAL ~ 2-21 Section II Limitations· PLACARDS (Cont'd) On Left Cabin Door: BEECHCRAFT Duchess 76 ____________________~__________~t j . EMERGENCY GEAR )__E_X_T_EN_SI_O_N_H_A_N_D_l_E_C7l ' < , On Floorboard in Front of Pilot's Seat: EMERGENCY GEAR EXTENSION II~ -ACCESS DOOR- dl ~ ~ On Inside of Emergency Gear Extension Access Door: II EMERGENCY LANDING GEAR EXTENSION ~ L Landing Gear Molar Circuit Breaker - OFF (Pull) 2. Gear Position Switch - DOWN 3. ·Moximum· Indicated Airspeed - 100 KNOTS 4. Em"ergency Extension Valve - OPEN L. (Use Handle - Turn Counterclockwise) ~ 2-22· January 1978 BEECHCRAFT Duchess 76 Section II Limitations On Lower Left Sidewall Panel: Iro LEVEL AIRCRAFT - LEVE~ I BAGGAGE COMPARTMENT FLOOR I On Left Side Panel: IoEFROs0I ~Ull ON I CABIN AIR PULL OFF IPI~~BIN H~~~J eLINCR~ On Aft Cabin Bulkhead: HAT SHELF L NO HEAVY OBJECTS January 1978 2-23 Section" Limitations BEECHCRAFT Duchess 76 PLACARDS (ConI'd) On Fuel Selector Panel: 2-24 + + ON CROSS FEED CROSS FEED lEVEL FliGHT ONLY OFF LEFT RIGHT ENGINE ENGINE 50 GALS 50 GALS USABLE USABLE . FUEL SELECTOR L + + January 1976 - BEECHCRAFT Duchess 76 On Pedestal: MIC + PHONE + L OFF CARB HEAT ON r L Section II Limitations en II l o S E H A lF 0 P E NU u COWL FLAP January 1978 2-25 I Section II Limitations PLACARDS (Cont'd) On Pedestal Between Front Seats: I/wIN~ f DOWN , IT RT BEECHCRAFT Duchess 76 ir- )l L R "--- ~ L RUDDER TAB ~ -N o 5 E -[T.] ~ - - LUP - --.J ELEVATOR TAB 2-26 October 1979 - - BEECHCRAFT Duchess 76 Section II Limitations Adjacent to Each Seat: ~NSTRUCTION-SHOULDER STRA;l 1. OCCUPANTS SHORTER THAN 4 FT. 7 IN. DO NOT USE SHOULDER STRAP. 2. PLACE SEAT BACK IN THE UPRIGHT POSITION DURING TAKEOFF AND LANDING. I L_ On Baggage Door Adjacent to Handle: January 1978 I" I PULL PIN ROTATE HANDLE TO OPEN L 2-27 Section \I Limitations BEECHCRAFT Duchess 76 On Baggage Compartment Door: 2-28 IsAGGAGE COMPARTMENJl LOAD IN ACCORDANCE WITH WEIGHT AND BALANCE INSTRUCTION MAXIMUM STRUCTURAL L CAPACITY - 200 POUNDS -.J January 1978 I I iI . ) - - BEECHCRAFT Duchess 76 SECTION III EMERGENCY PROCEDURES TABLE OF CONTENTS SUBJECT PAGE Emergency Airspeeds (3900 Ibs) ...................................... 3-3 One-engine Operation ................................................... 3-3 Determining Inoperative Engine ........................................ 3-4 One-engine-inoperative Procedures ................................. 3-4 Engine Failure During Ground Roll ................................ 3-4 Engine Failure After Lift-off and in Flight. ....................... 3-5 Air Star!... .......................................................................... 3-6 Engine Fire (Ground) ........................................................ 3-8 Engine Fire in Flight .......................................................... 3-8 Emergency Descent ......................................................... 3-8 Maximum Glide Configuration ........................................... 3-8 Landing Emergencies ....................................................... 3-9 Gear-up Landing .... '" .................................................... 3-9 One-engine-inoperalive Landing ................................... 3-9 One-engine-inoperative Go·Around ............................ 3- to Systems Emergencies .................................................... 3·10 Operation on Crossfeed .............................................. 3·10 Electrical Smoke or Fire .. '" ......................................... 3·11- Complete Loss of Electrical Power .............................. 3-12 Illumination of Alternator-Out Light... ......................... 3-12A Starter Engaged Warning Light Illuminated ............... 3-128 Unscheduled Electric Elevator Trim .......................... 3-128 Landing Gear Manual Extension ................................. 3-13 Landing Gear Retraction After Practice Manual Extension ...................................... 3·13 Alternate Static Air Source .......................................... 3-14 Emergency Exit ..................................................... :..... 3-15 September, 1983 3-1 Section III Emergency Procedures BEECHCRAFT Duchess 76 TABLE OF CONTENTS (Continued) SUBJECT Simulated One-Engine Inoperative Unlatched Door in Flight Spins .. . ...... . 3-2 PAGE 3-15 3-15 3-16 April 1979 - BEECHCRAFT Duchess 76 Section III Emergency Procedures All airspeeds quoted in this section are indicated airspeeds (lAS) and assume zero instrument error. EMERGENCY AIRSPEEDS (3900 LeS) I One-Engine-Inoperative Best Angle-ol-Climb (VX) .................................................. 85 kts One-Engine-Inoperative Best . Rate-ol-Climb (Vy) .................................................... 85 kts Air Minimum Control Speed (VMCA) .................. ·.......... 65 kts One-Engine-Inoperative Enroute Climb ........................................................... 85 kts Emergency Descent ................................................... 140 kts One-Engine-Inoperative Landing: Maneuvering to Final Approach ................................. 90 kts Final Approach (Flaps Down) .................................... 85 kts Intentional One-Engine-Inoperative Speed (VSSE) ................................................ · .......... 71 kts Maximum Glide Range ................................................. 95 kts I Stal/ warning horn is inoperative when the Batlery and Alternator Switches are turned off. The following information is presented to enable the pilot to form, in advance, a definite plan 01 action for coping with the most probable emergency situations which could occur in the operation of the airplane. Where practicable, the emergencies requiring immediate corrective action are treated in check list form for easy reference and familiarization. Other situations, in which more time is usually permitted to decide on and execute a plan of action, are discussed at some length. ONE-ENGINE OPERATION Two major factors govern one engine operat"lons; airspeed and directional· control. The airplane can be safely maneuvered or trimmed for normal hands-off operation and sustained in this configuration by the operative engine AS LONG AS SUFFICIENT AIRSPEED IS MAINTAINED September, 1983 '3-3 Section III Emergency Procedures DETERMINING INOPERATIVE ENGINE BEECHCRAFT Duchess 76 The following checks will help determine which engine has faifed: 1. DEAD FOOT - DEAD ENGINE. The rudder pressure required to maintain directional control will be on the side of the operative engine. . 2. THROTILE. Partially retard the throttle for the engine that is believed to be inoperative; there should be no change in control pressures or in the sound of the en- gine if the correct throttle has been selected. AT LOW ALTITUDE AND AIRSPEED THIS CHECK MUST BE ACCOMPLISHED WITH EXTREME CAUTION. Do not attempt to determine the inoperative engine by means of the tachometers or the manifold pressure gages. These ':instruments often indicate near normal readings. ONE-ENGINE-INOPERATlVE PROCEDURES ENGINE FAILURE DURING GROUND ROLL 1. Throttles - IDLE 2. Braking - MAXIMUM 3. Fuel Selectors - OFF 4. Battery, Alternator, and Magneto/Start Switches - OFF 3-4 NOTE Braking effectiveness is improved if the brakes are not locked. January 1982 BEECHCRAFT Duchess 76 Section III Emergency Procedures ENGINE FAILURE AFTER LIFT-OFF AND IN FLIGHT An immediate landing is advisable regardless of take-off weight. Continued flight can not be assured if take-off weight exceeds the weight determined from the TAKE-OFF WEIGHT graph. Higher take-off weights will result in a loss of altitude while retracting the landing gear and feathering the propeller. Continued flight requires immediate pilot response to the following procedures: 1. Landing Gear and Flaps - UP 2.. Throttle (inoperative engine) - IDLE 3. Propeller (inoperative engine) - FEATHER 4. Power (operative engine) - AS REQUIRED 5. Airspeed - AT OR ABOVE THE 50-FT·TAKE-OFF SPEED (80 KNOTS) After positive control of the airplane is established: . 6. Secure inoperative engine: a. Mixture Control - IDLE CUT-OFF b. Fuel Selector - OFF c. Aux Fuel Pump - OFF d. Magneto/Start Switch - OFF e. Alternator Switch - OFF f. Cowl Flap - CLOSE 7. Airspeed - ESTABLISH 85 KTS 8. Electrical Load - MONITOR (Maximum load of 100% on remaining engine) NOTE The most important aspect of engine failure is the necessity to maintain lateral and directional control. If airspeed is below 65 knots, reduce power on operative engine as required to maintain control. Refer to the SAFETY INFORMATION section for additional information regarding pilot technique. January 1982 3-5 Section III Emergency Procedures AIR START CAUTION BEECHCRAFT Duchess 76 The pilot should determine the reason for engine failure before attempting an air start. NOTE Airspeed should be maintained at or above 100 KIAS to ensure the engine will windmill. WITH UNFEA THERING ACCUMULA TORS: -~-------~ 1. Fuel Selector - ON 2. Throttle - SET approximately % travel 3. Aux Fuel Pump - ON 4. Magneto/Start Switch - BOTH 5. Propeller Control - MOVE FULL FORWARD UNTIL ENGINE WINDMILLS, THEN BACK TO MIDRANGE. USE STARTER MOMENTARILY IF AIRSPEED IS BELOW 100 KTS. If propeller does not unfeather or engine does not turn, proceed to WITHOUT UNFEATHERING ACCUMULATORS procedure. 6. Mixture - FULL RICH' 7. If engine fails to run, clear engine by allowing it to windmill with mixture in the FULL LEAN position. When engine fires, advance mixture to FULL RICH. 8. When Engine Starts - ADJUST THROTTLE, PROPELLER, AND MIXTURE CONTROLS 9. Aux Fuel Pump - OFF (when reliable power has been regained) 10. Alternator Switch - ON 11. Oil Pressure and Oil Temperature - CHECK 12. Warm Up Engine (approximately 2000 rpm and 15 in. HG) 13. Set power as required and trim. iy, C0WL FLltf';;--- o,dju,f 3-6 January 1982 - BEECHCRAFT Duchess 76 Section III Emergency Procedures WITHOUT UNFEA THERING ACCUMULA TORS: CAUTION Numerous air starts without unfeathering accumulators can shorten engine-mount life. 1. Fuel Selector - ON 2. Throttle - SET approximately V4 travel 3. Aux Fuel Pump - ON 4. MagnetolStart Switch - BOTH 5. Mixture - FULL RICH 6. Propeller Control - MOVE FORWARD OF FEATHERING DETENT TO MIDRANGE 7. MagnetolStart Switch - START and PUSH TO PRIME (hold on START until windmilling begins and continue to prime as required) NOTE If air start is unsuccessful, return propeller control to the FEATHER position and secure engine. 8. When Engine Starts - ADJUST THROTTLE, PROPELLER, AND MIXTURE CONTROLS 9. Aux Fuel Pump - OFF (when reliable power has been regained) i o. Alteinatoi Switch - ON j 1. Oil Pressure and Oil Temperature - CHECK 12. Warm Up Engine (approximately 2000 rpm and 15 in.' Hg) 13, Set power as required and trim. January 1982 3-7 I I Section III Emergency Procedures ENGINE FIRE (GROUND) 1. Mixture Controls - IDLE CUT-OFF 2. Continue to crank affected engine 3. Fuel Selectors - OFF 4. Battery and Alternator Switches - OFF 5. Extinguish fire with extinguisher ENGINE FIRE IN FLIGHT BEECHCRAFT Duchess 76 Shut down the affected engine according to the following procedure and land immediately. Follow the applicable single-engine procedures in this section. 1. Fuel Selector - OFF 2. Mixture Control - IDLE CUT-OFF 3. Propeller - FEATHER 4. Aux Fuel Pump - OFF 5. Magneto/Start Switch - OFF 6. Alternator Switch - OFF EMERGENCY DESCENT 1. Propellers - 2700 RPM 2. Throttles - IDLE 3. ,Jl.,irspeed - 140 KTS 4. Landing Gear- DOWN MAXIMUM GLIDE CONFIGURATION 1. Propellers - FEATHER 2. Wing Flaps - UP 3. Landing Gear - UP 4. Cowl Flaps - CLOSE 5. Airspeed - 95 KTS 3-8 January 1978 - BEECHCRAFT Duchess 76 Section III Emergency Procedures The glide ratio in this configuration is approximately 2 nauti- cal miles of gliding distance for each 1000 feet of altitude above the terrain. LANDING EMERGENCIES GEAR-UP LANDING If possible, choose firm sad or foamed runway. When as- sured of reaching the landing site.' 1. Cowl Flaps - CLOSE 2. Wing Flaps - FULL DOWN (DN) 3. Throttles - IDLE 4. Mixture Controls - IDLE CUT-OFF 5. Battery, Altemator, and MagnetolStart Switches - OFF 6. Fuel Selectors - OFF 7. Keep wirigs level during touchdown. S. Get clear of the airplane as soon as possible after it stops. NOTE The gear-up landing procedures are based on the best available information and no actual tests have been conducted. ONE-ENGINE-INOPERATIVE LANDING On final approach and when it is certain that the field can be reached: 1. Landing Gear - DOWN 2. Airspeed - S5 KTS 3. Power - AS REQUIRED January 1978 3-9 Section 1/1 Emergency Procedures BEECHCRAFT Duchess 76 When it is certain there is no possibility of go-around: 4. Wing Flaps - FULL DOWN (ON) 5. Execute normal landing. ONE-ENGINE-INOPERATIVE GO-AROUND WARNING Level flight may not be possible for certain com- binations 01 weight, 'temperature and altitude. In any event, DO NOT attempt a one-engine inc operative go-around after flaps have been fully extended. 1. Power - MAXIMUM ALLOWABLE 2. Landing Gear - UP 3, Wing Flaps - UP 4. Airspeed - MAINTAIN 85 KTS MINIMUM SYSTEMS EMERGENCIES OPERATION ON CROSSFEED NOTE The fuel crossfeed system is to be used during emergency conditions in level flight only. 3-10 January 1978 i i I i II ! i, j - BEECHCRAFT Duchess 76 Section III Emergency Procedures. Left Engine InoperatiVe: 1. Right Aux Fuel Pump - ON 2. Left Fuel Selector - OFF 3. Right Fuel Selector - CROSS FEED 4. Right Aux Fuel Pump - ON or OFF as required Right Engine Inoperative: 1. Left Aux Fuel Pump - ON 2. Right Fuel Selector - OFF 3. Left Fuel Selector - CROSSFEED 4. Left Aux Fuel Pump - ON or OFF as required ELECTRICAL SMOKE OR FIRE Action to be taken must consider existing conditions and equipment installed: 1. Battery and Alternator Switches - OFF WARNING Electrically driven instruments and stall warning horn will become inoperative. 2. All Electrical Switches - OFF 3. Battery and Alternator Switches - ON 4. ES$ential Electrical Equipment - ON (Isolate defective equipment) NOTE Ensure fire is out and will not be aggravated by draft. Turn off CABIN HEAT switch and push in the CABIN AIR control. To aid in smoke evacua: lion, open pilot's storm window if required. April 1979 3-11 I Section III Emergency Procedures BEECHCRAFT Duchess 76 COMPLETE LOSS OF ELECTRICAL POWER INDICA TlONS 1. Dimming of lights, with load meters showing 100% or much greater than normal, or load meters showing 0% accompanied by no ALTERNATOR-OUT Lights. ACTION 1. Both Alternator Swilches - OFF 2. 8att@ry Switch - OFF 3. Both BUS-ISO Circuit Breakers - PULL 4. Remove all electrical loads. 5. Both Alternator Switches - ON. 6. Minimize all electrical loads. Select only that electrical equipment which is essential for safe flight. 7. Extend landing gear with emergency system. 8. LAND AS SOON AS PRACTICAL; HAVE THE COMPLETE ELECTRICAL SYSTEM CHECKED BEFORE THE NEXT FLIGHT. 3-12 CAUTION Since the battery is off line when this procedure is used, large changes in electrical load should be minimized in order to reduce the possibility of damage to electrical components. March 1979 - BEECHCRAFT Duchess 76 Section III Emergency Procedures ILLUMINATION OF ALTERNATOR-OUT LIGHT In th e e vent of the illumination of a single AL TERNA TOR-OUT UNDERVOL TAGE light or a single AL TERNA TOR-OUT OVER VOL TAGE light: Check the respective loadmeter for load indication: a. No Load - Turn off affected alternator. b. Reduce load. to single alternator capability. c. Reset the affected alternator with the alternator switch. Monitor overvoltage and undervoltage lights and loadrneter for proper operation. CAUTION If proper operation is not restored, turn alternator switch OFF. In the event of the illumination of both AL TERNA TOR-OUT UNDER VOL TAGE lights or both AL TERNATOR-OUT OVER VOL TAGE lights: Check loadmeters for load indication. If condition indicates malfunction of both alternator circuits: a. Both AL T Switches - OFF b. Minimize 'electrical load since only battery po';ver will be available. c. Reset the alternators with the alternator sWitches., Monitor overvoltage and undervoltage lights and ioadmeters for proper operation. CAUTION If proper operation is not restored, turn alternator switches OFF. April 1979 3-12A Section III Emergency Procedures 6EECHCRAFT Duchess 76 STARTER ENGAGED WARNING LIGHT ILLUMINA.TED (If installed) After engine start, should the starter relay remain engaged, the starter will remain energized and the starter engaged warning light will remain illuminated. Continuing to supply power to the starter will result in eventual loss of electrical power. Ilfuminated On the Ground: 1. Battery and Alternator Switches - OFF 2. Do not take off Illuminated In Flight After Air Start: 1. Perform action for COMPLETE LOSS OF ELECTRICAL POWER (see this section) 2. Land as soon as practical UNSCHEDULED ELECTRIC ELEVATOR TRIM 1. Airplane Attitude - MAINTAIN using elevator control. 2. Elevator Trim Thumb Switch (on control wheel) DEPRESS AND MOVE IN DIRECTION OPPOSITE UNSCHEDULED PITCH TRIM. 3. Elevator Trim ON-OFF Switch (on instrument panel) - OFF 4. Manual Elevator Trim Control Wheel - RETRIM AS DESIRED 3-126 NOTE Do not attempt to operate the electric trim sys- tem until the cause of the malfunction has been determined and corrected. August, 1980 - BEECHCRAFT Duchess 76 Section III Emergency Procedures LANDING GEAR MANUAL EXTENSION Reduce airspeed before attempting manual extension of the landing gear. 1. Landing GEAR MOTOR Circuit Breaker - OFF (pull out) 2. Landing Gear .Switch Handle - DOWN position 3. Airspeed: 100' KTS MAXIMUM 4. Emergency Extension Valve - OPEN (Use Emergency Extension Wrench - Turn Counterclockwise) 5. If electrical system is operative, check landing gear position lights and warning horn. (Check Landing GEAR CONTROL circuit breaker engaged.) WARNING After emergency landing gear extension, do not move any landing gear controls or reset any switches or circuit breakers until airplane is on jacks, as failure may have been in the gear-up circuit and gear might retract with the airplane on the ground. LANDING GEAR RETRACTION AFTER PRACTICE MAN- UAL EXTENSION After practice manual extension of the landing gear, the gear can only be retracted electrically, as fOllows: CAUTION Do not operate landing gear electrically, or turn on landing light or taxi light, if battery is off the line. January 1978 3-13 Section III Emergency Procedures BEECH CRAFT Duchess 76 1. Emergency Extension Valve - CLOSE (Use Emergency Extension Wrench - Turn Clockwise) 2. Landing GEAR MOTOR Circuit Breaker - ON (push in) 3. Landing Gear Switch Handle - UP ALTERNATE STATIC AIR SOURCE THE ALTERNATE STATIC AIR SOURCE SHOULD BE USED FOR CONDITIONS WHERE THE NORMAL STATIC SOURCE HAS BEEN OBSTRUCTED. When the airplane has been exposed to moisture and/or icing conditions (espe- cially on the ground), the possibility of obstructed static ports should be considered. Partial obstruction will result in the rate-ot-climb indication being sluggish during a climb or de- scent. Verification of suspected obstruction is possible by switching to the alternate system and noting a sudden sus- tained change in rate of climb. This may be accompanied by abnormal indicated airspeed and altitude changes beyond normal calibration differences. Whenever any obstruction exists in the Normal Static Air System, or the Alternate Static Air System is desired for use: 1. Pilot's Alternate Static Air Source - Switch to ON AL- TERNATE (lower sidewall adjacent to pilot) 2. For Airspeed Calibration and Altimeter Correction, refer to PERFORMANCE section. 3-14 NOTE The alternate static air valve should remain in the OFF NORMAL position when system is not needed. January 1978 BEECHCRAFT Duchess 76 Section 11/ Emergency Procedures EMERGENCY EXIT The forward cabin doors andlor the aft utility door may be used for egress if required. SIMULATED ONE-ENGINE INOPERATIVE ZERO THRUST (Simulated Feather) Use the following power setting (only on one engine at a time) to establish zero thrust. Use of this power setting avoids the difficulties of restarting an engine and preserves the availabiliy of power to counter potential hazards. 1. Throttle" Lever - SET 8.0 in. Hg MANIFOLD PRESSURE 2. Propeller Lever - RETARD"~ FEATHER DETENT /Jo, IN NOTE This setting will approximate Zero Thmst using recommended one-engine-inoperat'lve climb speeds. UNLATCHED DOOR IN FLIGHT I If the cabin door is not secured it may come unlatched in flight. This usually occurs during" or just "after takeoff. The door will trail in a position approximately 3 inches open. A buffet may be encountered with the door open in flight. Re- turn to the field in a normal manner. If practicable, during the landing flare-out have a passenger hold the door to prevent it from swinging open. April 1979 3-15 BEECHCRAFT Duchess 76 Section III Emergericy Procedures SPINS . If a Spin is Entered Inadvertently: Immediately move the control column full forward, apply full rudder opposite to the direction of the spin and reduce power on both engines to idle. These three actions should be done as nearly simultaneously as possible; then continue to hold this control position until rotation stops and then neutralize all controls and execute a smooth pullout. Ailerons should be neutral during recovery. 3-16 NOTE Federal Aviation Administration Regulations do not require spin demonstration of airplanes of this class; therefore, no spin tests have been conducted. The recovery technique is based on the best available information. April 1979 - - BEECHCRAFT Duchess 76 SECTION IV NORMAL PROCEDURES TABLE OF CONTENTS SUBJECT PAGE Speeds for safe Operation (3900 Ibs) ............................... 4·3 Preflight Inspection ........................................................... 4·3 Before Starting .................................... ,............................. 4·7 External Power ................................................................. 4·7 Starting Engines Using Auxiliary Power Unit ................................................................. 4·8 Starting ............................................................................. 4·9 After Starting. and Taxi ................................................. 4·1 OA Before Takeoff .............................................................. 4·10B Takeoff ............................................................................ 4·11 Climb .............................................................................. 4·12 Cruise ............................................................................. 4·12 Leaning Mixture Using EGT Indicator ............................. 4·13 Descent ......................................... " ............................... 4·13 Before Landing ............................................................... 4·13 Balked Landing ............................................................... 4·14 After Landing ................................................................... 4~ 14 Shutdown ........................................................................ 4·15 Environmental Systems .................................................. 4·15 Heating and Ventilation ............................................... 4-15 Electric Elevator Trim .............................. ' ....................... 4-15 Cold Weather Operation ................................................. 4·16 Preflight Inspection ...................................................... 4-16 Engines .......... :............................................................ 4·16 Taxiing ........................................................................ 4·17 Practice Demonstration of VMCA ..................................... 4-18 Noise Characteristics ...................................................... 4-19· Septe!1l ber. 1983 4·1 Section IV Normal Procedures . BEECH CRAFT Duchess 76 INTENTIONALLY LEFT BLANK 4-2 January 1978 - BEECHCRAFT Duchess 76 Section IV Normal Procedures All airspeeds quoted in this section are indicated airspeeds (lAS) and assume zero instrument error. SPEEDS FOR SAFE OPERATION (39DO LBS) I Maximum Demonstrated Crosswind Component... ....... 25 kts Ta~i~~~il ................. : ...................................................... 71 kts I. 50-It Speed ................................................................ 80 kts Two-Engine Best Angle-ol-Climb (VX) .......................... 71 kts Two-Engine Best Rate-ol-Climb (Vy) ........................... 85 kts Cruise Climb ............................................................... 100 kts Turbulent Air Penetration ....................................... : .... 132 kts Landing Approach: Flaps UP ...........................................:,....·.................... 87 kts Flaps DOWN (ON) ..................................................... 76 kts I Balked Landing Climb ................................................... 71 kts Intentional One-Engine-Inoperative Speed (V SSE) ........................................................... 71 kts. Air Minimum Control Speed (VMCA) .. ·.......................... 65 kts I; PREFLIGHT INSPECTION o @ 1 ,. ®/ ® (If I ., ® 76·60'1.1 September, 1983 4-3 Section IV Normal Procedures 1. COCKPIT BEECHCRAFT Duchess 76 a. Control Lock - REMOVE AND STOW b. Parking Brake - SET c. All Switches - OFF d. Trim Tabs - SET TO ZERO e. Flush-type Fuel Drain/Emergency Gear Extension Tool - OBTAIN (refer to SYSTEMS section for in- formation pertaining to flush-type fuel drains). This tool can also beiused for opening the oil and fuel filler caps. 2.>Ft,EFT WING TRAILING EDGE ·:L",:. ·a~~"'(f'"lap - CHECK GENERAL CONDITION b. Fuel Vent - CHECK, UNOBSTRUCTED c. Aileron - CHECK GENERAL CONDITION AND FREEDOM OF MOVEMENT d.· Wing Tip - CHECK e. Position and Strobe Light - CHECK 3. LEFT WING LEADING EDGE a. Pitot - REMOVE COVER, EXAMINE FOR OB- STRUCTIONS b. Landing and Taxi Light - CHECK c. Stall Warning Vane· - CHECK FREEDOM OF MOVEMENT d. Fuel Tank - CHECK QUANTITY; Cap - SECURE e. nedown and Chocks - REMOVE f. Flush-type Fuel Sump - DRAIN (use fuel-drain tool) g. Fuel Selector - DRAIN h. Engine Cowling· - CHECK CONDITION AND SECURITY 4-4 January 1978 - ( BEECHCRAFT Duchess 76 i. Air Intakes - CLEAR Section IV Normal Procedures j. !Propeller - EXAMINE FOR NICKS, SECURITY" _~ND OIL LEAKS '. k. Engine Oil - CHECK QUANTITY; Cap and Door - SECURE I. i Cowl Flap - CHECK m. . Wheel Well, Door, Tire, Brake Line, and Strut - '<;:HECK n. Flush-type Crossfeed Fuel Drains (2) - DRAIN (use fuel"drain tool) 4.' NOSE SECTION a. Nose Cowling and Nose Cone - CHECK CONDI- TION AND SECURITY b. Heater Air Intake - CLEAR c. Heater Exhaust and Vents - CLEAR d. Wheel Well, Doors, Tire, a'nd Strut - CHECK 5. - RIGHT WING LEADING EDGE a. Flush-type Crossfeed Fuel Drains (2) - DRAIN (use fuel-drain tool) b. Wheel Well, Door, Tire, Brake Line, and Strut - CHECK c. Engine Cowling - CHECK CONDITION AND SECURITY d. Air Intakes'- OLEAR e. Propeller - EXAMINE FOR NICKS, SECURITY, AND OIL LEAKS I. Engine Oil - CHECK QUANTITY; Cap and Door - SECURE January 1978 4-5 Section IV Normal Procedures g. Cowl Flap - CHECK h. Fuel Selector - DRAIN i.. Flush-type Fuel Sump - DRAIN j. Tiedown and Chocks - REMOVE BEECHCRAFT Duchess 76 k. Fuel Tank - CHECK QUANTITY; Cap - SECURE I. Stall Warning Vane - CHECK FREEDOM OF MOVEMENT m. Taxi Light - CHECK n. Wing Tip - CHECK o. Position and Strobe Light - CHECK 6. Fi"fiHT WING TRAILING EDGE a. Aileron - CHECK CONDITION AND FREEDOM OF MOVEMENT b. Fuel Vent - CHECK, UNOBSTRUCTED c. Flap - CHECK GENERAL CONDITION 7. FUSELAGE RIGHT SIDE a. Battery Vents - CHECK, UNOBSTRUCTED b. Static Port - CLEAR OF OBSTRUCTIONS c. Emergency Locator Transmitter - ARMED 8. EMPENNAGE a.· Control Suriaces and Trim Tabs - CHECK b. Tail Cone and Position Light - CHECK c. Tiedown - REMOVE d. Cabin Air Inlet - CHECK 4-6 January 1978 - BEECHCRAn Duchess 76 Section IV Nonnal Procedure. 9 FUSELAGE LEFT SIDE a. b. c. d. e. Static Port - CLEAR OF "OBSTRUCTIONS , , Cabin Air Outlet - CHECK A 1 Antenn'ls - CHECK Load Distnbution - CHECK AND SECURE Aft Utility Door - CHECK SECURE NOTE Check operation of lights,if night flight is antici- pated. 1. Fue; Drain/Emergency Extension Too! - STOW 2. Seals - POSITION AND LOCK; Seat BaCKS - UPRIGHT 3. '3eal Belts and Shoulder Harnesses - FASTEN 4 Parking Brake - SET 5. All I;'vionics - OFF 6. CtrcuH Breakers - IN 7. Landing Gear Handle - DOWN 6. Carburetor Heat - OFF (up position) 9 Cowl Flap Controls - OPEN (down position) 10 ~ue! Seiectors - CHECK OPERATION, THEN ON Light S\NHches - OFF GaHery and Aiiernato, Switches - ON , " I-uei Quantity indicators - CHECK QUANTITY (See LlM!T p,TIONS fOt take-off fuel} 14. Landing Gear Position Lights - CHECK EXTERNAL POWER The lallowing precautions shall be observed while using ex- ternal power: January 1978 4-7 I Section IV Normal Procedures CAUTION BEECHCRAFT Duchess 76 Exercise caution when connecting the external .,. power cable to prevent shorting the battery to the air1rame or arcing the clamps of the cable together. I 1. Make certain Ihe battery switch is ON and all aVionics. and electrical switches are OFF. and a.ballery is in the system before connecting an external power unit. ThiS protects the voltage regulators and associated electrical equipment from voltage transients (power flucluaiions) . 2. The airplane has a negative ground system. Be sure to connect the positive lead of the auxiliary power Unit to the poSitive terminal of the airptane's external power receptacle and the negative lead of the auxiliary power unit 10 Ihe negative terminal of the external power receptacle. 3. to prevent arcing. make certain no power IS being supplied when the connection is made STARTING ENGINES USING AUXILIARY POWER UNIT I 1. 2. Battery Switch - ON Alternators. Electrical and Avionics Equipment· OFF 3. Auxiliary Power Unit - CONNECT 4. Auxiliary Power Unit - SET OUTPUT 13.5 to 14.25 volts (If 28-voll system - SET OUTPUT 27 0 to 285 volts) 4-8 April 1979 - BEECHCRAFT Duchess 76 Section IV Normal Procedures 5. Auxiliary Power Unit - ON 6. Left Engine - START (use normal start procedures) 7. Auxiliary Power Unit - OFF (after engine has been started) 8. Auxiliary Power Unit - DISCONNECT (before starting right engine) 9. Alternator Switches - ON STARTING 1. Battery Switch - ON; Both ALTERNATOR-OUT UNDERVOLTAGE Lights - ILLUMINATED 2. Mixture - FULL RICH 3. Propeller - HIGH RPM (Low Pitch) 4. Throttle - FAST IDLE (114 Travel) 5. Aux Fuel Pump - ON 6. Magneto/Start Switch - Engage starter - PUSH TO PRIME as engine is cranking - Release to BOTH position when engine starts. WARNING Do not pump throttles during starting procedures. Hot Start (Engine Hot) a. Mixture - FULL RICH b. Throttle - FAST IDLE (1/4 Travel) c. Fuel Boost Pump - OFF d. Starter - ENGAGE (Do Not Prime) Flooded Engine.' a. Mixture' IDLE CUT-OFF b. Throttle. - FAST IDLE (1/4 Travel) September, 1983 4-9 Section IV BEECHCRAFT Duchess 76 Normal Procedures c. Starter - ENGAGE (After 2 to 3 seconds prime briefly, intermittently) d. Mixture - ADVANCE TO FULL RICH when engine starts. CAUTION Maximum starter engage duty cycle is 30 seconds ON, followed by a minimum of two minutes OFF. 7. Engine Warm-up - 1000 to 1200 RPM 8. Oil Pressure - ABOVE RED RADIAL WITHIN 30 SECONDS 9. External Power (if used).- DISCONNECT 10. r1 . Alternator Switch - ON; CHECK FOR CHARGING Starter Engaged Warning Light (il installed) - CHECK: should be illuminated during start and extinguished after start. 12. 13. I1.4. 15. I16. 4-10 Using same procedure, start other engine. Left Alternator Switch and Battery Switch . OFF. Check lor Left ALTERNATOR-OUT UNDERVOLTAGE Light illuminated, and an indication of less than 75% (14-volt system) or 40% (28-volt system) on the right loadmeter. ' Left ~lternator Switch and Battery Switch - ON. Right ,lI.!!emalor Switch and Battery Switch -. OFF. Check for Right ALTERNATOR-OUT UNDER- VOLTAGE Light illuminated, and an indication 01 less than 75% (14-volt system) or 40% (28-volt system) on the left load meter. Right Alternator Switch and Battery Switch - ON. August, 1980 - ., BEECHCRAFT Duchess 76 Section IV Normal Procedures CAUTION If the starter engaged warning light remains illuminated after starting, or the loadmeters and/or ALTERNATOR-OUT UNDERVOLTAGE lights do not indicate/illuminate properly, an electrical malfunction is indicated. The battery switch and both alternator switches should be placed in the OFF position. Do not take off. If the starter engaged warning light is not installed or is inoperative, and the ·Ioadmeters and/or ALTERNATOR-OUT UNDERVOLTAGE lights do not indicate/illuminate properly, an electrical malfunction is indicated, The battery switch and both alternator sW\~Ch~~ should be placed In the OFF position. Db nor take off. AFTER STARTING, AND TAXI CAUTION Never taxi with a flat tire or flat shock strut. During taxi operations, particular attention should be given to propeller tip clearance. Extreme !?aution is required when operating ·on unimproved or irregular surfaces or when high winds exist. 1. Avionics - ON, AS REQUIRED 2. Lights - AS REQUIRED August, 1980 4-10A , . Section IV Normal Procedures NOTE . BEECHCRAFT Duchess 76 Turn strobe lights off when taxiing in the vicinity : of other aircraft or when flying in fog or clouds. Standard position lights are to be used for all night operations .. 3. Annunciator Warning Lights - PRESS-TO-TEST 4.. Aux Fuel Pumps - OFF, THEN ON (check fuel pressure . • indicators· to verify operation of engine-driven pumps) 5. All Engine Instruments - CHECK 6. Brakes - RELEASE AND CHECK CAUTION Detuning the counterweight system of the engine can occur by rapid throttle operation, high rpm (low pitch) and low manifold pressure, or propeller feathering. (See latest revision of Lycoming Service Bulletin No. 245.) BEFORE TAKEOFF 1. Seat Belts and Shoulder Harnesses - CHECK 2. Parking Brake. - SET 3. Radios - CHECK 4. Flight Instruments - CHECK AND SET 5. Engine Instruments· CHECK 6. Starter Engaged Warning Light (if installed) - CH ECK I(should not be .Iit). If light is not installed or is inoperative, monitor loadmeters for proper indications. 7.' . Fuel Selectors - ON 8. Flighl Controls - CHECK PROPER DIRECTION AND FREEDOM OF MOVEMENT August, 1980 BEECHCRAFT Duchess 76 Section IV Normal Procedures 9. Wing Flaps - CHECK OPERATION 10. Electric Trim - CHECK OPERATION 11: Trim - SET TO TAKE-OFF RANGE 12. Throttles - 2200 RPM I 13. Propellers - EXERCISE (100-200 rpm drop) 14. Magnetos - CHECK (175 rpm maximum drop, within 50 rpm of each 'Other) NOTE Avoid operation on one magneto for more than 5 to 10 seconds. If rpm drop is excessive, lean to smooth operation and recheck. 15. Carburetor Heat - CHECK and set OFF (cold) for takeoff 16. Throttles - 1500 RPM 17. Propellers - FEATHER CHECK (Do not exceed 500 rpm drop.) Repeat 3 or 4 times in cold weather. 18. Gyro Pressure and Loadmeters - CHECK 19. Throttles - IDLE 20. Aux Fuel Pumps - CHECK ON 21. Doors and Window - SECURE 22. Parking Brake - RELEASE 23. Engine Instruments - CHECK TAKEOFF Take-off Power Full Throttle, 2700 rpm 1. Power - SET TAKE-OFF POWER (before brake release) 2. Mixtures - FULL RICH or lean to smooth operation as required by field elevation 3. Airspeed - ACCELERATE TO AND·.:- MAINTAIN TAKE-OFF SPEED September, 1983 4-11 Section IV Normal Procedures BEECHCRAFT Duchess 76 4. Landing Gear - RETRACT when airplane is positively airborne NOTE If red in-transit light remains illuminated after.30 seconds. place landing gear switch handle in the down position. make a normal landing and have the landing gear system checked. 5. Airspeed - ESTABLISH DESIRED CLIMB SPEED when clear of obstacles CLIMB Maximum Climb ................................ Full Throttle. 2700 RPM ECruise Climb ..................................... Full Throttle. 2600 RPM 1. Engine Temperatures - MONITOR 2. Power - SET 3. Mixtures - LEAN AS REQUIRED 4. Cowl Flaps - AS REQUIRED 5. Aux Fuel Pumps - OFF CRUISE Maximum Cruise Power . . . . . 24.0 in. Hg or full throttle. at 2700 rpm Recommended Cruise Power. ..... 24.0 in. Hg or full throttle. at 2500 rpm Recommended Cruise Power. ..... 24.0 in. Hg or full throttle. at 2300 rpm Economy Cruise Power . .. .... 20.0 in. Hg or full throttle. at 2300 rpm 1. Power - SET AS DESIRED (Use Tables in PERFORM- ANCE section) 2. Mixtures - LEAN AS REQUIRED 3. Cowl Flaps - AS REQUIRED 4-12 September, 1983 - BEECHCRAFT Duchess 76 Section IV Normal Procedures ; EANING MIXTURE USING THE EXHAUST GAS ';'EMPERATURE INDICATOR (EGT) For level flight at 75% power or less, the EGT unit should be used in the following manner: 1. Lean the mixture and note the point on the indicator at which the temperature peaks and starts to fall. a. CRUISE (LEAN) MIXTURE - Enrich mixture (push mixture control forward) until EGT indicator shows a drop of 25°F to 50°F on rich side of peak. b, BEST POWER MIXTURE - Enrich mixture (push mixture control forward) until EGT indicator shows a drop of 75°F to 100°F on rich side of peak. CAUTION Do not continue to lean mixture beyond the pOint necessary to establish peak temperature. Continuous 'operation is recommended at 25°F or below peak EGT only on rich side of peak. 2. Changes in altitude and power setting require EGT to be rechecked and mixture reset. 3. A mixture resulting in an EGT 25°F on the rich side of peak should also result in luel flow and TAS values approximately equal to those presented in the Cruise Power Settings tables in the PERFORMANCE Section. IIf not, the values derived from the Range, Endurance, and Cruise Speeds charts must be revised accordingly. In very cold weather, EGT's 25°F rich of peak may not be obtainable, . September, 1983 4-13 Section IV Normal Procedures DESCENT 1. Altimeter - SET 2. Cowl Flaps - CLOSE BEECHCRAFT Duchess 76 3. Windshield Defroster - AS REQUIRED 4. Carburetor Heat - FULL ON or FULL OFF, AS REQUIRED 5. Power - AS REQUIRED (avoid prolonged idle settings and low cylinder head temperatures) 6. Mixtures - ENRICH AS REQUIRED BEFORE LANDING 1. Seat Belts and Shoulder Harnesses - FASTENED. SEAT BACKS UPRIGHT 2. Fuel Selectors - CHECK ON 3. Aux Fuel Pumps - ON 4. Mixture Controls - FULL RICH (or as required by field elevation) 5. Carburetor Heat - FULL ON or FULL OFF AS REQUIRED NOTE In the event of a go-around, Carburetor Heat shall be in the full OFF (cold) position after full throttle application. 6. Cowl Flaps - AS REQUIRED 7. Landing Gear - DOWN (140 KTS Maximum) 8. Landing and Taxi Lights.- AS REQUIRED 9. Wing Flaps - FULL DOWN (DN) (110 KTS Maximum) 10. Airspeed - ESTABLISH LANDING APPROACH SPEED 11. Propellers - HIGH RPM 4-14 September, 1983 BEECHCRAFT Duchess 76 BALKED LANDING 1. Propellers - HIGH RPM 2. Throttles - FULL FORWARD 3. Airspeed - 71 KTS 4. Wing Flaps - UP 5. Landing Gear - UP 6. Cowl Flaps - AS REQUIRED AFTER LANDING Section IV Normal Procedures 1 .. Landing and Taxi Lights - AS REQUIRED ..r 2. Wing Flaps - UP , C."'"' I r/~f's O?'" 3. Trim Tabs _ SET TO TAKE-OFF RANGE _£/et/&for -D°'''' 4. Cowl Flaps - OPEN SHUTDOWN 1 . Parking Brake - SET . 2. Aux Fuel Pumps - OFF 3. Electrical and Avionics Equipment - OFF' 4. Propellers - HIGH RPM 5. Throttles - 1000 RPM I 6. Mixtures - IDLE CUT-OFF 7. Magneto/Start Switches - OFF, after engines stop 8. Battery and Alternaior Switches - OFF f Controls - LOCKED 10: Install wheel chocks and release brakes if the airplane is I.to be left unattended. . N()j£ . - Tt2! itl jVZZS E [){)aJ)71 TorPP;5tJ.£.A!1 ~()D[)E~ .~ sePtem£'x~iiPl~) 01}/11 ffGE 4-14A A-MntJ/ 'Co~J.- . Section IV .Normal Procedures BEECHCRAFT Duchess 76 INTENTIONALL Y LEFT BLANK 4-14B September, 1983 - - BEECH CRAFT Duchess 76 ENVIRONMENTAL SYSTEMS HEATING AND VENTILATION Section IV Normal Procedures Refer to the SYSTEMS DESCRIPTION section for operation of heating and ventilation controls. ELECTRIC ELEVATOR TRIM 1. On/Off SWitch - ON 2. Control Wheel Trim Switch - Depress and move forward for nose down, aft for nose up, and when released, the switch returns to the center (OFF) position. Procedure for UNSCHEDULED ELECTRIC ELEVATORI TRIM is given in EMERGENCY PROCEDURES Section. September, 1983 4-15 Section IV Normal Procedures COLD WEATHER OPERATION PREFLIGHT INSPECTION BEECHCRAFT Duchess 76 All accumulations of ice, snow and frost must be removed from the wings, tail, control surfaces and hinges, propellers, windshield, fuel cell filler caps, crankcase vents, and fuel vents. If such accumulations are not removed completely, the airplane shall not be flown. The deposits will not blow off in flight. While an adverse weight factor is clearly involved in the case of heavy deposits, it is less obvious that even slight accumulations will disturb or completely destroy the de- signed aerodynamic properties of the airfoils. The normal preflight procedures should then be completed, with particular attention given to check of flight controls for complete freedom of movement. ENGINES Use engine oil in accordance with Consumable Materials in the HANDLING, SERVICING AND MAINTENANCE section. I WARNING Ascertain that magneto/start switches and battery master switch are OFF before moving propeller by hand. Alviays pull the propeller through by hand, opposite the direc- tion of rotation, several times to clear the engine and "limber up" the cold, heavy oil before using the starter. This will also lessen the load on the battery if external power is not used. Under very cold conditions, it may be necessary to preheat the engines· prior to a start. Particular attention should be given to the oil cooler, engine sump and propeller hub to 4-16 April 1979 - ( BEECHCRAFT Duchess 76 Section IV Normal Procedures ensure proper preheat. A start with congealed oil in the system may produce an indication of normal pressure im- mediately after the start, but then the oil pressure may de- crease when residual oil in the engine is pumped back with the congealed oil in the sump. If an engine heater capable of heating both the engine sump and cooler is not available, the oil should be drained while the engine is hot and stored in a warm area until the next flight. If there is no oil pressure within the first 30 seconds of running, or if oil pressure drops after a few minutes of ground operation, shut down and check for broken oil lines, oil cooler leaks or the possibility of congealed oil. NOTE It is advisable to use external power for starting in cold weather. During warm-up, monitor engine temperatures closely, since it is quite possible to exceed the cylinder head temperature limit in trying to bring up the oil temperature. Exercise the propellers several times to remove cold oil from the pitch change mechanism. The propellers Should also be cycled occasionally in 'flight. During letdown and landing, give special attention to engine temperatures, since the engines will have a tendency toward overcooling. TAXIING Avoid taxiing through water, slush, or muddy surfaces if possible. In cold weather, water, slush, or mud, when splashed onto landing gear mechanisms or control surface hinges may freeze, preventing free movement and resulting in structural damage. April 1979 4-17 Section IV BEECHCRAFT Duchess 76 Normal Procedures PRACTICE DEMONSTRATION OF YMCA YMCA demonstration may be required for mUlti-engine pilot certification. The following procedure shall be used at a safe altitude of at least 5000 feet above the ground in clear air only. WARNING INFLJGHT ENGINE CUTS BELOW VSSE SPEED OF 71 KTS ARE PROHIBITED. 1. Landing Gear - UP 2. Wing Flaps - UP 3. Airspeed - ABOVE 71 KTS (VSSE) 4. Propeller Levers - HIGH RPM· 5. Throttle (simulated inoperative engine) - IDLE 6. Throttle (other engine) - FULL FORWARD 7. Airspeed - REDUCE approximately 1 knot per second until either YMCA or stall warning is obtained. 4-18 CAUTION Use rudder to maintain directional control (heading) and ailerons to maintain 50 bank towards the operative engine (lateral attitude). At the first sign of either YMCA or stall warning (which may be evidenced by: inability to maintain heading or lateral attitude, aerodynamic stall buffet, or stall warning horn sound) immediately initiate recovery: reduce power to idle on the operative engine and immediately lower the nose to regain VSSE. April 1979 - BEECHCRAFT Duchess 76 Section IV Normal Procedures NOISE CHARACTERISTICS Approach to and departure from an airport should be made so as· to avoid prolonged flight at low altitude near noise- sensitive areas. Avoidance of· noise-sensitive areas, if practical, is preferable to overflight at relatively low altitudes. For VFR operations over outdoor assemblies of persons, recreational and park areas, and other noise-sensitive areas, pilots should make every effort to fly not less than 2000 feet above the surface, weather permitting, even though flight at a lower· level may be consistent with the provisions of government r.egulations. NOTE The preceding recommended procedures do not apply where they would conflict with Air Traffic Control clearances or instructions, or where, in the pilot's judgement, an altitude of less than 2000 feet is necessary to adequately exercise his duty to see and avoid other airplanes. Flyover noise level established in compliance with FAR 36 is: 78.7 dB(A) No determination has been made by the Federal Aviation Administration that the noise level of this airplane is or should be acceptable or unacceptable for operation at, into, or out of any airport. October 1979 4·19 BEECHCRAFT Duchess 76 SUBJECT SECTION V PERFORMANCE TABLE OF CONTENTS Introduction to Performance and PAGE Flight Planning ............................................................... 5-3 Conditions ..................................................... 5-3 - 5-13 Comments Pertinent to the Use of Performance Graphs ................................................... 5-14 Airspeed Calibration - Normal System .......................... 5-16 Altimeter Correction - Normal System .......................... 5-17 Airspeed Calibration - Alternate System .... ' .................. 5-18 Altimeter Correction - Alternate System ........................ 5-19 Fahrenheit to Celsius Temperature Conversion .............. 5-20 ISA Conversion ............................................................... 5-21 Manifold Pressure vs RPM .............................................. 5-22 Take-OffWeight.. ............................................................ 5-23 Stall Speeds - Power Idle .............................................. 5-24 Wind Components .......................................................... 5-25 Take-Off Distance ........................................................... 5-26 Take-Off Distarice - Grass Surface ............................... 5-27 Accelerate-Stop Distance ............................................... 5-28 Accelerate-Go Distance .................................................. 5-29 Climb - Two Engine ...................................................... 5-30 Take~Off Climb Gradient, One Engine Inoperative ...................................................... 5-31 Time, Fuel, and Distance to Climb ................................. :5-32 Climb - One Engine Inoperative .................................... 5-33 Service Ceiling - One Engine Inoperative ..................... 5-34 January 1978 5-1 Section V Performance BEECHCRAFT Duchess 76 TABLE OF CONTENTS (Continued) SUBJECT PAGE Cruise Speeds ................................................................ 5-35 Cruise Power Settings .......................................... 5-36 - 5-40 Maximum Cruise Power .............................................. 5-36 Recommended Cruise Power ..................................... 5-37 Recommended Cruise Power ..................................... 5-38 Recommended Cruise Power ..................................... 5-39 Economy Cruise Power .............................................. 5-40 Range Profile - 100 Gallons ........................................ 5-40B Endurance Profile - 100 Gallons .................................... 5-41 Holding Time ................................................................... 5-42 Time. Fuel. and Distance to Descend ............................. 5-43 Climb - Balked Landing ................................................. 5-44 Landing Distance - Flaps Down (ON) ............................ 5-45 i. Landing Distance - Flaps Up ......................................... 5-46 Landing Distance - Grass Suriace - Flaps Down (ON) ......................................................... 5-47 5-2 January 1982 BEECHCRAFT Duchess 76 INTRODUCTION TO PERFORMANCE AND FLIGHT PLANNING Section V Performance All airspeeds quoted in this section are indicated airspeeds (