Pilot's Operating Handbook
Robinson R66 Turbine · Weight And Balance
Overview
This Pilot's Operating Handbook (POH) is specifically designed for the Robinson R66 helicopter. It serves as an operational guide for pilots, providing essential information required by regulatory authorities and additional data from the manufacturer. The handbook emphasizes the importance of flight instruction and knowledge of airworthiness directives, ensuring that pilots are well-informed about the helicopter's limitations, performance, and operational procedures. The document is structured into ten sections, with critical information such as limitations and emergency procedures presented prominently for easy access. Pilots are encouraged to familiarize themselves with the entire handbook before flight to ensure safe operation.
- The longitudinal reference datum for the R66 is 100 inches forward of the main rotor shaft centerline.
- The main rotor diameter is 33 feet with 2 blades, while the tail rotor diameter is 60 inches.
- The Rolls-Royce 250-C300/A engine has a maximum continuous rating of 224 SHP and a 5-minute takeoff rating of 270 SHP.
- Pilots must ensure the helicopter is airworthy and operate within the limitations outlined in the POH.
- Understanding weight and balance definitions is crucial for safe operation, including terms like CG Limits and Useful Load.
Document
Source
Originally published by robinsonstrapistorprod.blob.core.windows.net. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Weight And Balance
- Year
- 2023
- Pages
- 12
- File size
- 607 KB
- Publisher
- robinsonstrapistorprod.blob.core.windows.net
Specifications & performance
Extracted from this document.
Specifications
- Engine (hp)
- 300
- Engine model
- Rolls-Royce 250-C300/A
Common. Rarer than 5% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the Robinson R66 Turbine.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
Free — save the ROBINSON R66 Turbine to your watchlist and track it in one place.
More Robinson R66 Turbinemanuals & documents
See all 32 →- Flight Standardization Board ReportPilot's Operating Handbook
- Loss of control and in-flight break-up involving Robinson R66, VH-KFTOther Documents
- ROBINSON MAINTENANCE MANUAL MODEL R66Checklist
- Emergency Checklist R66 – Heli Academy V1.0 2025-09Pilot's Operating Handbook
- Amping Airpower — Electric Vertical Takeoff and Landing for the U.S. Air ForceOther Documents
- Airworthiness Bulletin AWB 53-012 Issue 1 - 14 October 2024Other Documents
- Federal Register Index January–September 2024Supplemental Type Certificate
- ROBINSON MAINTENANCE MANUAL MODEL R66Service Bulletins
- R66 PILOT'S OPERATING HANDBOOK AND FAA APPROVED ROTORCRAFT FLIGHT MANUALPilot's Operating Handbook
- R22, R44 & R66 MAINTENANCE & INSPECTION KITS – 20 OCTOBER 2022Parts Catalog
- ROBINSON MODEL R66 SECTION 4 NORMAL PROCEDURESChecklist
- KI-233 Revision EService Bulletins
If you fly the Robinson R66 Turbine, you may also be researching these.
In this document
General
The General section introduces the POH, outlining its purpose as an operational guide for pilots. It emphasizes the pilot's responsibility for ensuring the helicopter's airworthiness and understanding the operational limitations as detailed in the handbook.
Weight and Balance Definitions
This section defines key terms related to weight and balance, including Reference Datum, Arm, Moment, Center of Gravity (CG), and CG Limits. It specifies that the longitudinal reference datum for the R66 is 100 inches forward of the main rotor shaft centerline.
Descriptive Data
The Descriptive Data section provides detailed specifications of the R66's main and tail rotor systems, including dimensions, blade characteristics, and drive system details. For example, the main rotor has a diameter of 33 feet and consists of 2 blades.
Performance Definitions
This section outlines various performance metrics, including airspeed definitions (KIAS, KCAS, KTAS) and altitude measurements (MSL, Pressure Altitude, Density Altitude). It also explains terms like Maximum Continuous Power (MCP) and Takeoff Power (TOP).
Cautions and Notes
Cautions and Notes highlight important safety information, indicating that failure to follow procedures can result in equipment damage or injury. Notes provide supplementary information to enhance understanding.
Safety notes
- Failure to follow procedures can result in equipment damage, injury, or death.
- Pilots are responsible for determining the helicopter's airworthiness before flight.
Full document text
REVISED: 15 AUG 2023 1-i ROBINSON MODEL R66 SECTION 1 GENERAL SECTION 1 GENERAL CONTENTS Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Cautions and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 External Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Descriptive Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Performance Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 Weight and Balance Definitions . . . . . . . . . . . . . . . . . . . 1-8 Conversion Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 INTENTIONALLY BLANK ROBINSON MODEL R66 INTRODUCTION SECTION 1 GENERAL SECTION 1 GENERAL This Pilot's Operating Handbook is designed as an operating guide for the pilot. It includes material required to be furnished to the pilot by 14 CFR parts 21, 27, and 36. It also contains supplemental data supplied by the helicopter manufacturer. This handbook is not designed as a substitute for adequate and competent flight instruction or for knowledge of current airworthiness directives, applicable federal aviation regulations, and advisory circulars. Nor is it intended to be a guide for basic flight instruction or a training manual. It should not be used for operational purposes unless kept in a current status. Assuring that the helicopter is in airworthy condition is the responsibility of the owner. The pilot in command is responsible for determining that the helicopter is safe for flight. The pilot is also responsible for remaining within operating limitations as outlined by instrument markings, placards, and this handbook. Since it is very difficult to refer to a handbook while flying a helicopter, the pilot should study the entire handbook and become very familiar with limitations, performance, procedures, and operational handling characteristics of the helicopter before flight. This handbook has been divided into ten numbered sections. Limitations and emergency procedures have been placed ahead of normal procedures, performance, and other sections to provide easier access to that information. Provisions for expansion of the handbook have been made by deliberate omission of certain paragraph numbers, figure numbers, item numbers, and pages noted as being intentionally blank. ISSUED: 25 OCT 2010 1-1 ROBINSON MODEL R66 CAUTIONS AND NOTES SECTION 1 GENERAL Cautions and Notes emphasize important information and are used as follows: CAUTION Equipment damage, injury, or death can result if procedure or instruction is not followed. NOTE Provides emphasis or supplementary infor- mation. ISSUED: 25 OCT 2010 1-2 ROBINSON MODEL R66 SECTION 1 GENERAL REVISED: 15 AUG 2023 1-3 R66 EXTERNAL DIMENSIONS (LATER AIRCRAFT SHOWN) EXTERNAL DIMENSIONS ROBINSON MODEL R66 SECTION 1 GENERAL ISSUED: 25 OCT 2010 1-4 DESCRIPTIVE DATA MAIN ROTOR Articulation Free to teeter and cone, rigid in plane Number of Blades 2 Diameter 33 feet Blade Chord 11.5 inches inboard, 12.2 inches outboard Blade Twist -4 Degrees Tip Speed at 100% RPM 705 feet per second TAIL ROTOR Articulation Free to teeter, rigid in plane Number of Blades 2 Diameter 60 inches Blade Chord 5.5 inches (constant) Blade Twist 0 Precone Angle 1 Degree Tip Speed at 100% RPM 635 feet per second DRIVE SYSTEM Engine to Drive Line Sprag type overrunning clutch, spiral-bevel gears with 13:37 speed reducing ratio Drive Line to Main Rotor Spiral-bevel gears with 11:57 speed reducing ratio Drive Line to Tail Rotor Spiral-bevel gears with 31:27 speed increasing ratio ROBINSON MODEL R66 DESCRIPTIVE DATA (cont'd) POWER PLANT Model: Rolls-Royce 250-C300/A 1 commercial designation RR300 (FAA type certificate no. E4CE) Type: Free-turbine turboshaft Manufacturer's rating: 300 SHP R66 5 minute takeoff rating: 270 SHP R66 continuous rating: 224 SHP FUEL SECTION 1 GENERAL Approved fuel grades and capacity: See Section 2. OIL Approved oil grades and capacity: See Section 8. ISSUED: 25 OCT 2010 1-5 ROBINSON MODEL R66 SECTION 1 GENERAL PERFORMANCE DEFINITIONS KIAS KCAS KTAS Knots Indicated Airspeed is speed shown on the airspeed indicator. Knots Calibrated Airspeed is speed shown on the airspeed indicator corrected for instrument and position error. (See Section 5 for position error correction.) Knots True Airspeed is airspeed relative to un- disturbed air. It is KCAS corrected for pressure altitude and temperature. Never-Exceed Airspeed. Vv Speed for best rate of climb. Vh Stabilized level-flight speed at maximum continuous power. MSL Altitude Pressure Altitude Density Altitude ISA SHP Altitude above mean sea level, indicated by the altimeter (corrected for position and instrument error) when the barometric subscale is set to the atmospheric pressure existing at sea level. Altitude indicated by the altimeter (corrected for instrument error) when the barometric sub- scale is set to 29.92 inches of mercury (1013.2mb). Altitude in ISA conditions at which the air would have the same density (it is pressure altitude corrected for OAT). International Standard Atmosphere exists when pressure is 29.92 inches of mercury at sea level, temperature is 15°C at sea level, and temperature decreases 1 .98 °C per 1000 feet of altitude. Shaft Horsepower is actual power delivered by the engine output shaft. (Shown by torque meter as percentage of 270 horse- power when N2 is 100%). ISSUED: 25 OCT 2010 1-6 ROBINSON MODEL R66 PERFORMANCE DEFINITIONS (cont'd) SECTION 1 GENERAL RPM Revolutions Per Minute or speed of engine or rotor. Shown on R66 tachometers in percent. 100% engine output shaft (N 2 ) RPM = 6016. 100% gas generator (N 1) RPM = 50970. 100% main rotor RPM = 408. N 1 Engine gas generator (compressor) RPM. N 2 Engine output shaft RPM. MGT Measured Gas Temperature (in turbine section).
Show full textShow less
MCP Maximum Continuous Power (83% torque in the R66). TOP Takeoff Power ( 100% torque, limited to 5 minutes in the R66). TOGW Takeoff Gross Weight. OAT Outside Air Temperature. GPH Gallons Per Hour. AGL Above Ground Level. IGE In Ground Effect. OGE Out of Ground Effect. ISSUED: 25 OCT 2010 1-7 ROBINSON MODEL R66 SECTION 1 GENERAL WEIGHT AND BALANCE DEFINITIONS Reference Datum Station Arm Moment Center of Gravity (CG) CG Limits Usable Fuel Unusable Fuel A vertical plane from which horizontal dis- tances are measured for balance purposes. The longitudinal reference datum is 1 00 inches forward of the main rotor shaft centerline for the R66. Fore-and-aft location along the helicopter fuselage given in terms of distance in inches from the longitudinal reference datum. Horizontal distance from a reference datum to the center of gravity (CG) of an item. The weight of an item multiplied by its arm. Location on the fuselage (usually expressed in inches from the reference datum) at which the helicopter would balance. CG is calcula- ted by dividing total helicopter moment by total helicopter weight. Extreme CG locations within which the heli- copter must be operated at a given weight. Fuel available for flight planning. Fuel remaining in the tank that cannot reliably provide uninterrupted fuel flow in the critical flight attitude. Standard Weight of a standard helicopter including Empty Weight unusable fuel, full operating fluids, and full engine oil. Basic Empty Weight Payload Useful Load Standard empty weight plus weight of in- stalled optional equipment. Weight of occupants, cargo, and baggage. Difference between maximum gross weight and basic empty weight. ISSUED: 25 OCT 2010 1-8 ROBINSON MODEL R66 CONVERSION TABLES METRIC TO ENGLISH Multiply centimeters (cm) kilograms (kg) kilometers (km) kilometers (km) liters (I) liters (I) meters (m) ENGLISH TO METRIC Multiply feet (ft) gallons, U.S. (gal) inches (in) inches (in) nautical miles (nm) pounds (lb) quarts (qt) statute miles (mi) ~ 0.3937 2.2046 0.5400 0.6214 0.2642 1.0567 3.2808 ~ 0.3048 3.7854 2.5400 25.4000 1.8520 0.4536 0.9464 1.6093 SECTION 1 GENERAL To Obtain inches (in) pounds (lb) nautical miles (nm) statute miles (mi) gallons, U.S. (gal) quarts (qt) feet (ft) To Obtain meters (m) liters (I) centimeters (cm) millimeters (mm) kilometers (km) kilograms (kg) liters (I) kilometers (km) 1 nautical mile = 1 . 1 508 statute miles 1 statute mile = 0.8690 nautical mile TEMPERATURE °F = 9/5 (°C)+32 °C = 5/9 (°F - 32) ISSUED: 25 OCT 2010 1-9 ROBINSON MODEL R66 THIS PAGE INTENTIONALLY BLANK ISSUED: 25 OCT 2010 SECTION 1 GENERAL 1-10