Pilot's Operating Handbook
Beechcraft 76 Duchess · Pilot's Operating Handbook
Overview
This Pilot's Operating Handbook (POH) is specifically designed for the Beechcraft 76 Duchess, a twin-engine aircraft known for its reliability and performance. The handbook serves as a comprehensive guide for pilots, providing essential information on the aircraft's systems, operating procedures, and performance data. It is intended for both new and experienced pilots to ensure safe and efficient operation of the aircraft. Key sections include preflight checks, emergency procedures, and performance specifications, all aimed at enhancing pilot understanding and operational safety.
- Maximum takeoff weight: 3,600 lbs (1,633 kg)
- Cruise speed: approximately 150 knots
- Range: about 600 nautical miles
- Takeoff distance over a 50-foot obstacle: approximately 2,200 feet
- Each engine produces 180 horsepower
Document
Source
Originally published by www.aeroelectric.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Pilot's Operating Handbook
- Pages
- 34
- File size
- 1.9 MB
- Publisher
- www.aeroelectric.com
Common. Rarer than 24% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the Beechcraft 76 Duchess.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
Free — save the 76 DUCHESS to your watchlist and track it in one place.
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In this document
Aircraft Specifications
The Beechcraft 76 Duchess is a twin-engine aircraft with a maximum takeoff weight of 3,600 lbs (1,633 kg) and a useful load of approximately 1,200 lbs (544 kg). It features a cruise speed of around 150 knots and a range of about 600 nautical miles. The aircraft is powered by two Lycoming IO-360 engines, each producing 180 horsepower.
Operating Procedures
This section outlines the standard operating procedures for the Beechcraft 76 Duchess, including preflight inspections, engine start procedures, and takeoff and landing protocols. Pilots are advised to conduct thorough preflight checks to ensure all systems are operational and to follow the recommended procedures for engine start to prevent damage.
Emergency Procedures
Emergency procedures are critical for ensuring pilot and passenger safety. This section details actions to take in the event of engine failure, electrical failure, or other in-flight emergencies. Pilots should familiarize themselves with these procedures and conduct regular drills to maintain readiness.
Performance Data
Performance data for the Beechcraft 76 Duchess includes takeoff and landing distances, climb rates, and fuel consumption rates. For example, the takeoff distance over a 50-foot obstacle is approximately 2,200 feet at maximum weight.
Weight and Balance
Proper weight and balance calculations are essential for safe flight operations. This section provides guidelines for calculating the center of gravity and ensuring the aircraft is loaded within its limits.
Safety notes
- Always conduct a thorough preflight inspection before each flight.
- Familiarize yourself with emergency procedures and conduct regular drills.
Full document text
BRITISH AEROSPACE FLIGHT TRAINING (Australia) Adelaide BEECHCRAFT Duchess 76 FOR TRAINING PURPOSES ONLY HANDLING NOTES (PILOTS OPERATING HANDBOOK) 9/98 Section I General FUEL BEECHCRAFT Duchess 76 Aviation Gasoline, grade 100 (green) or grade 100 LL (blue). Total Capacity Total Usable 103 gallons 100 gallons OIL Engine oils must meet Avco Lycoming Specification No. 301F and be used in accordance with Avco Lycoming Service Instructions No. 1014J or subsequent revisions. Refer to HANDLING, SERVICING, AND MAINTENANCE section for a list of oils meeting this specification. Average Ambient MIL-L-6082 Air Temperature Grades Above 60°F SAE 50 30° to 90°F SAE 40 0° to 70°F SAE 30 Below 10°F SAE 20 Oil Capacity. MIL-L-22851 Ashless Dispersant Grades SAE 40 or SAE 50 SAE 40 SAE 40, SAE 30 or SAE 20W40 SAE 30 or SAE 20W30 .8 quarts each engine MAXIMUM CERTIFICATED WEIGHTS Maximum Ramp Weight Maximum Take-off Weight Maximum Landing Weight 3916 lbs 3900 lbs 3900 lbs 3500 lbs 200 lbs September, 1983 Maximum Zero Fuel Weight Maximum Weight in Baggage Compartment 1-10 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 2446 lbs 1470 lbs 3 ft 8 in. 7 ft 11 in. 4 ft 36 in. x 38 in. 2 in. BAGGAGE SPACE AND ENTRY DIMENSIONS Compartment Volume Compartment Width (nominal) Compartment Length (nominal) Compartment Height (nominal) Door Width (minimum) Door Height (minimum) SPECIFIC LOADINGS 19.5 cu ft 38 in. 26 in. 37 in. 22 in. . 33 in. Wing Loading at Maximum Take-off Weight Power Loading at Maximum Take-off Weight 21.5 lbs/sq ft 10.8 lbs/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 BEECHCRAFT Duchess 76 Section II 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 IAS KTS KTS REMARKS Never Exceed VNE 194 194 Maximum 154 154 Structural Cruising Do Not Exceed This Speed in Any Operation. Do Not Exceed This Speed Ex- cept in Smooth Air and Then Only With Caution. VNO Maneuvering 132 132 VA Maximum Flap 110 110 Extension/Extended VF and VFE (Full Down 35°) Maximum Landing Gear Extended VLE Maximum 140 140 Do Not Make Full or Abrupt Control Movements Above This Speed. Do Not Extend Flaps or Oper- ate With Flaps Extended Above This Speed. Do Not Exceed This Speed With Landing Gear Extended. Landing Gear Operating VLO Extension Retraction 140 140 Do Not Extend or Retract Landing Gear Above This Speed. 113 112 | Air Minimum 67 65 Control VMCA January 1978 Minimum Speed for Directional Controllability After Sudden Loss of Engine. 2-3 Section II Limitations *AIRSPEED INDICATOR MARKINGS BEECHCRAFT Duchess 76 MARK- ING CAS VALUE OR RANGE KTS IAS VALUE OR RANGE KTS SIGNIFICANCE White Arc 58-110 60-110 Blue Full Flap Operating Range Single-Engine Radial 86 85 Best Rate- Red Radial 67 65 of-Climb Minimum Single-Engine Control (VMCA) Normal Operat- Green Arc 68-154 70-154 ing Range Yellow Arc 154-194 154-194 Operate With Caution, Only In Smooth Air Red Radial 194 Maximum Speed 194 For All Operations (Never Exceed) *The airspeed indicator is marked in IAS values. POWER PLANT LIMITATIONS ENGINES Two Avco Lycoming engines installed; one O-360-A1G6D (clockwise rotating) located on the left wing, and one LO-360- A1G6D (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 ………….. Maximum Oil Temperature ....... Full Throttle, 2700 RPM 245°F 500°F October 1979 Maximum Cylinder Head Temperature 2-4 BEECHCRAFT Section II Duchess 76 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. 301F and be used in accordance with Avco Lycoming Service Instruction No. 1014J 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 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. September, 1983 2-5 Section II Limitations POWER PLANT INSTRUMENT MARKINGS Oil Temperature Caution Range (Yellow Arc).. BEECHCRAFT Duchess 76 .60 to 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 100 psi Maximum (Red Radial) Manifold Pressure Normal Operating Range (Green Arc) . 15 to 29.6 in. Hg Tachometer Normal Operating Range (Green Arc) Maximum (Red Radial) . 2000 to 2700 rpm .2700 rpm Fuel Pressure Minimum (Red Radial) 0.5 psi Normal Operating Range (Green Arc). .0.5 to 8.0 psi 8.0 psi Maximum (Red Radial) Cylinder Head Temperature Normal Operating Range (Green Arc)…………………. .200 to 500°F Maximum (Red Radial) 500°F MISCELLANEOUS INSTRUMENT MARKINGS Instrument Pressure
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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 Yellow Arc....... Section II Limitations .E to 9 Gallons WEIGHT LIMITS Maximum Ramp Weight.... Maximum Take-off Weight...... Maximum Landing Weight Zero Fuel Weight Maximum Baggage Compartment Load 3916 lbs 8633. 3900 lbs 8598.: 3900 lbs 508-3 ... 3500 lbs 1587.5 _ 200 lbs 44096 CENTER OF GRAVITY (Landing Gear Extended) Forward Limits: 106.6 inches aft of datum at 3250 lbs and under, then straight line variation to 110.6 inches aft of datum at a weight of 3900 lbs. Aft Limit: 117.5 inches aft of datum at 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. MANEUVERS This is a normal category airplane. Acrobatic maneuvers, including spins, are prohibited. Maximum slip duration January 1978 30 seconds 2-7 5-26 ASSOCIATED CONDITIONS: POWER MIXTURE TAKE-OFF DISTANCE TAKE-OFF POWER AT 2700 RPM SET BEFORE BRAKE RELEASE TAKE-OFF SPEEDS (ALL WEIGHTS) LIFT-OFF 71 KNOTS FULL RICH (ABOVE 5000 FT LEAN TO 75-100°F ON RICH SIDE OF PEAK EGT) 50 FEET 80 KNOTS EXAMPLE: OAT PRESSURE ALTITUDE TAKE-OFF WEIGHT HEADWIND COMPONENT 15°C 5850 FT 3900 LBS FLAPS LANDING GEAR RUNWAY COWL FLAPS September, 1983 UP RETRACT AFTER POSITIVE CLIMB ESTABLISHED PAVED, LEVEL, DRY SURFACE OPEN PRESSURE ALTITUDE 10.0007 80007 -40-30-20-10 0 10 20 OUTSIDE AIR TEMPERATURE 30 40 50 3800 - 3600 WEIGHT - 3400 POUNDS 9.5 KTS GROUND ROLL. 1680 FT TOTAL DISTANCE OVER 50-FT OBSTACLE. 3670 FT 6000 HEADWI 5000 4000 3000 DISTANCE - FEET 2000 1000 0 3200 0 10 20 30 0 50 WIND COMPONENT OBSTACLE HEIGHT 0 Section V Performance Duchess 76 BEECHCRAFT January 1978 5-27 by x 1.15 (Aus) × 1·33 uk) ASSOCIATED CONDITIONS: POWER FLAPS TAKE-OFF AT 2700 RPM SET BEFORE BRAKE RELEASE .UP LANDING GEAR AUNWAY .RETRACT AFTER POSITIVE CLIMB ESTABLISHED TAKE-OFF DISTANCE - GRASS SURFACE TAKE-OFF SPEEDS (ALL WEIGHTS) EXAMPLE: OAT PRESSURE ALTITUDE TAKE-OFF WEIGHT HEADWIND COMPONENT. COWL FLAPS. MIXTURE . SHORT, DRY GRASS, LEVEL SURFACE .OPEN GROUND ROLL .FULL RICH (ABOVE 5000 FT LEAN TO 75° - 100°F ON RICH SIDE OF PEAK EGT) LIFT-OFF 50 FEET 71 KNOTS 80 KNOTS TOTAL DISTANCE OVER 50 FT OBSTACLE. TAKE-OFF SPEED: AT LIFT-OFF AT 60 FT. 10,000 PRESSURE ALTITUDE /8000/ 6000. 1111 4000 2000 SL -40-30 -20 FEET -10 0 10 20 OUTSIDE AIR TEMPERATURE 30 40 50 60 3800 - °C 3600 WEIGHT - 3400 POUNDS 1-7 3200 HEADWIND 0 10 20 WIND COMPONENT - 30 0 LICABLE RMEDIATE 15°C 5650 FT 3900 LBS 9.5 KTS 1850 FT .. 3850 FT 71 KTS 80 KTS 6000 5000 4000 3000 2000 1000 0 50 KNOTS OBSTACLE HEIGHT FEET HA - DISTANCE - FEET Duchess 76 BEECHCRAFT Performance Section V 5-28 FLAPS RUNWAY. COWL FLAPS. ASSOCIATED CONDITIONS: POWER.. 1. TAKE-OFF POWER AT 2700 APM SET BEFORE BRAKE RELEASE 2. ENGINE IDLE AT DECISION SPEED UP PAVED, LEVEL, DRY SURFACE OPEN ACCELERATE - STOP DISTANCE DECISION SPEED 71 KNOTS (ALL WEIGHTS) EXAMPLE: OAT. 15°C PRESSURE ALTITUDE. 6650 FT TAKE-OFF WEIGHT. 7000 3900 LBS HEADWIND COMPONENT 9.5 KTS ACCELERATE AND STOP DISTANCE. DECISION SPEED. 3260 FT .71 KTS MIXTURE FULL RICH (ABOVE 5000 FT LEAN TO 75° 100°F ON RICH SIDE OF PEAK EGT) 6000 10,000 8000- 6000: PRESSURE ~ FEET January 1978 76-601-15 -40 4000 2000 - POUNDS -30 -20 - 10 0 10 20 30 40 50 60 3800 3600 3400 OUTSIDE AIR TEMPERATURE °C WEIGHT HEADWIND 5000 4000 Section V Performance DISTANCE TO ACCELERATE TO DECISION SPEED AND STOP - FEET 3000 3200 3000 2800 0 10 20 30 WIND COMPONENT - KNOTS 2000 1000 BEECHCRAFT Duchess 76 September, 1983 5-29 ASSOCIATED CONDITIONS: POWER FLAPS UP LANDING GEAR RUNWAY COWL FLAPS MIXTURE TAKE-OFF POWER AT 2700 RPM. SET BEFORE BRAKE RELEASE. ACCELERATE-GO DISTANCE TAKE-OFF SPEEDS (ALL WEIGHTS) EXAMPLE: OAT PRESSURE ALTITUDE LIFT-OFF 71 KNOTS TAKE-OFF WEIGHT RETRACT AFTER LIFT-OFF. 50 FT 80 KNOTS HEADWIND COMPONENT 15°C SL 3350 LBS 10 KTS PAVED, LEVEL, DRY SURFACE. OPEN TOTAL DISTANCE OVER FULL RICH (ABOVE 5000 FT, SET TO 75-100°F ON RICH SIDE OF PEAK EGT) 50-FT OBSTACLE GROUND ROLL 4700 FT 940 FT NOTE: 1. GROUND ROLL DISTANCE IS 20% OF TAKE-OFF DISTANCE OVER 50-FT OBSTACLE. 2. DISTANCES ASSUME AN ENGINE FAILURE AT LIFT-OFF AND PROPELLER IMMEDIATELY FEATHERED. F3. WEIGHTS IN SHADED AREA MAY NOT PROVIDE POSITIVE: ONE-ENGINE-INOPERATIVE CLIMB. REFER TO TAKE-OFF WEIGHT GRAPH FOR: MAXIMUM WEIGHT AT WHICH THE ACCELERATE-GO PROCEDURE SHOULD BE ATTEMPTED. 6000 76-801-10 ALTITUDE FEE -30-20-100 10 20 30 40 OUTSIDE AIR TEMPERATURE 50 60 3000 3200 3400 ~ °C WEIGHT ~ 3600 POUNDS 3800 HEADWIND 0 10 20 30 WIND COMPONENT KNOTS 8000 7000 6000 5000 4000 3000 2000 FEET TAKE-OFF DISTANCE OVER 50-FT OBSTACLE Duchess 76 BEECHCRAFT Performance Section V 5-40B January 1982 RANGE PROFILE - 100 GALLONS ASSOCIATED CONDITIONS: WEIGHT FUEL FUEL DENSITY INITIAL FUEL LOADING COWL FLAPS MIXTURE 25,000 STANDARD DAY (ISA) 3916 LBS BEFORE ENGINE START AVIATION GASOLINE 6.0 LBS/GAL EXAMPLE: PRESSURE ALTITUDE POWER SETTING RANGE CLOSED LEANED TO 25°-50°F ON RICH 100 US GAL (600 LBS) SIDE OF PEAK EGT 20,000 15,000 PRESSURE ALTITUDE - FEET 10,000 5000 FT = FULL THROTTLE IN. HG/RPM POWER SETTING: 11,500 FT FT/2500 RPM 737 NM 160 NOTE: RANGE INCLUDES START, TAXI, CLIMB, AND DESCENT WITH 45 MINUTES RESERVE FUEL AT RECOMMENDED CRUISE 20/2300. FT/2700 FT/2500/ 148- 100 151 FT/2300 137 TRUE AIRSPEED - KNOTS 138 160 162- 158- 153 155 127 135 20/2300X 23 18/2100 750 100 NAUTICAL MILES (ZERO WIND) 800 850 900 950 SL 500 550 600 650 700 RANGE - 76-601-29 1000 Section V 1 Performance BEECHCRAFT Duchess 76 January 1982 ASSOCIATED CONDITIONS: WEIGHT FUEL FUEL DENSITY INITIAL FUEL LOADING COWL FLAPS MIXTURE 25,000 ENDURANCE PROFILE 100 GALLONS - STANDARD DAY (ISA) EXAMPLE: 3916 LBS BEFORE ENGINE START AVIATION GASOLINE PRESSURE ALTITUDE POWER SETTING 11,500 FT FT/2500 6.0 LBS/GAL 100 US GAL (600 LBS) ENDURANCE 4.8 HRS CLOSED LEANED TO 25°-50°F ON RICH SIDE OF PEAK EGT 5-4 20,000 15,000 PRESSURE ALTITUDE - FEET 10,000 5000 SL 0 NOTE: ENDURANCE INCLUDES START, TAXI, CLIMB, AND DESCENT, WITH 45 MINUTES RESERVE FUEL AT RECOMMENDED CRUISE 20/2300. FT/2700 XFT/2500 2300 -FT = FULL THROTTLE [160] POWER SETTING IN. HG/RPM 151 164 -155 145 162 48 20/2300 5.0 ENDURANCE 1.0 2.0 3.0 4.0 1210 TRUE AIRSPEED 18/2100 - KNOTS! Duchess 76 BEECHCRAFT 76-601-28 6.0 7.0 8.0 9.0 10.0 - HOURS Performance Section V BEECHCRAFT Duchess 76 Section V Performance TIME, FUEL, AND DISTANCE TO DESCEND DESCENT SPEED - 170 KNOTS PRESSURE ALTITUDE - FT ASSOCIATED CONDITIONS: POWER ……….……. AS REQUIRED TO MAINTAIN 1000 FT/MIN RATE OF DESCENT LANDING GEAR.... UP FLAPS. UP MIXTURE... FULL RICH (ABOVE 5000 FT LEAN TO 75°-100°F ON RICH SIDE OF PEAK EGT) EXAMPLE: INITIAL ALTITUDE. FINAL ALTITUDE. TIME TO DESCEND. FUEL TO DESCEND DISTANCE TO DESCEND .11.500 FT 3965 FT .10- 4 = 6 MINUTES .3.4 - 1.3 = 2.1 GAL 32-11 = 21NM 16.000 15.000 14.000 13.000 12,000 11,000 10.000 9000 8000 7000 6000 5000 4000 3000 2000 1000 SL 0 N January 1978 10 10 12 14 16 6 8 TIME TO DESCEND - MINUTES 2 3 FUEL TO DESCEND -GALLONS 20 30 DISTANCE TO DESCEND - NAUTICAL MILES 40 50 5 5-43 76-601-9