PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
- § 27.1 Applicability
- § 27.2 Special retroactive requirements
- § 27.21 Proof of compliance
- § 27.25 Weight limits
- § 27.27 Center of gravity limits
- § 27.29 Empty weight and corresponding center of gravity
- § 27.31 Removable ballast
- § 27.33 Main rotor speed and pitch limits
- § 27.45 General
- § 27.49 Performance at minimum operating speed
- § 27.51 Takeoff
- § 27.65 Climb: all engines operating
- § 27.67 Climb: one engine inoperative
- § 27.71 Autorotation performance
- § 27.75 Landing
- § 27.87 Height-speed envelope
- § 27.141 General
- § 27.143 Controllability and maneuverability
- § 27.151 Flight controls
- § 27.161 Trim control
- § 27.171 Stability: general
- § 27.173 Static longitudinal stability
- § 27.175 Demonstration of static longitudinal stability
- § 27.177 Static directional stability
- § 27.231 General
- § 27.235 Taxiing condition
- § 27.239 Spray characteristics
- § 27.241 Ground resonance
- § 27.251 Vibration
- § 27.301 Loads
- § 27.303 Factor of safety
- § 27.305 Strength and deformation
- § 27.307 Proof of structure
- § 27.309 Design limitations
- § 27.321 General
- § 27.337 Limit maneuvering load factor
- § 27.339 Resultant limit maneuvering loads
- § 27.341 Gust loads
- § 27.351 Yawing conditions
- § 27.361 Engine torque
- § 27.391 General
- § 27.395 Control system
- § 27.397 Limit pilot forces and torques
- § 27.399 Dual control system
- § 27.411 Ground clearance: tail rotor guard
- § 27.427 Unsymmetrical loads
- § 27.471 General
- § 27.473 Ground loading conditions and assumptions
- § 27.475 Tires and shock absorbers
- § 27.477 Landing gear arrangement
- § 27.479 Level landing conditions
- § 27.481 Tail-down landing conditions
- § 27.483 One-wheel landing conditions
- § 27.485 Lateral drift landing conditions
- § 27.493 Braked roll conditions
- § 27.497 Ground loading conditions: landing gear with tail wheels
- § 27.501 Ground loading conditions: landing gear with skids
- § 27.505 Ski landing conditions
- § 27.521 Float landing conditions
- § 27.547 Main rotor structure
- § 27.549 Fuselage, landing gear, and rotor pylon structures
- § 27.561 General
- § 27.562 Emergency landing dynamic conditions
- § 27.563 Structural ditching provisions
- § 27.571 Fatigue evaluation of flight structure
- § 27.573 Damage Tolerance and Fatigue Evaluation of Composite Rotorcraft Structures
- § 27.601 Design
- § 27.602 Critical parts
- § 27.603 Materials
- § 27.605 Fabrication methods
- § 27.607 Fasteners
- § 27.609 Protection of structure
- § 27.610 Lightning and static electricity protection
- § 27.611 Inspection provisions
- § 27.613 Material strength properties and design values
- § 27.619 Special factors
- § 27.621 Casting factors
- § 27.623 Bearing factors
- § 27.625 Fitting factors
- § 27.629 Flutter
- § 27.653 Pressure venting and drainage of rotor blades
- § 27.659 Mass balance
- § 27.661 Rotor blade clearance
- § 27.663 Ground resonance prevention means
- § 27.671 General
- § 27.672 Stability augmentation, automatic, and power-operated systems
- § 27.673 Primary flight control
- § 27.674 Interconnected controls
- § 27.675 Stops
- § 27.679 Control system locks
- § 27.681 Limit load static tests
- § 27.683 Operation tests
- § 27.685 Control system details
- § 27.687 Spring devices
- § 27.691 Autorotation control mechanism
- § 27.695 Power boost and power-operated control system
- § 27.723 Shock absorption tests
- § 27.725 Limit drop test
- § 27.727 Reserve energy absorption drop test
- § 27.729 Retracting mechanism
- § 27.731 Wheels
- § 27.733 Tires
- § 27.735 Brakes
- § 27.737 Skis
- § 27.751 Main float buoyancy
- § 27.753 Main float design
- § 27.755 Hulls
- § 27.771 Pilot compartment
- § 27.773 Pilot compartment view
- § 27.775 Windshields and windows
- § 27.777 Cockpit controls
- § 27.779 Motion and effect of cockpit controls
- § 27.783 Doors
- § 27.785 Seats, berths, litters, safety belts, and harnesses
- § 27.787 Cargo and baggage compartments
- § 27.801 Ditching
- § 27.805 Flight crew emergency exits
- § 27.807 Emergency exits
- § 27.831 Ventilation
- § 27.833 Heaters
- § 27.853 Compartment interiors
- § 27.855 Cargo and baggage compartments
- § 27.859 Heating systems
- § 27.861 Fire protection of structure, controls, and other parts
- § 27.863 Flammable fluid fire protection
- § 27.865 External loads
- § 27.871 Leveling marks
- § 27.873 Ballast provisions
- § 27.901 Installation
- § 27.903 Engines
- § 27.907 Engine vibration
- § 27.917 Design
- § 27.921 Rotor brake
- § 27.923 Rotor drive system and control mechanism tests
- § 27.927 Additional tests
- § 27.931 Shafting critical speed
- § 27.935 Shafting joints
- § 27.939 Turbine engine operating characteristics
- § 27.951 General
- § 27.952 Fuel system crash resistance
- § 27.953 Fuel system independence
- § 27.954 Fuel system lightning protection
- § 27.955 Fuel flow
- § 27.959 Unusable fuel supply
- § 27.961 Fuel system hot weather operation
- § 27.963 Fuel tanks: general
- § 27.965 Fuel tank tests
- § 27.967 Fuel tank installation
- § 27.969 Fuel tank expansion space
- § 27.971 Fuel tank sump
- § 27.973 Fuel tank filler connection
- § 27.975 Fuel tank vents
- § 27.977 Fuel tank outlet
- § 27.991 Fuel pumps
- § 27.993 Fuel system lines and fittings
- § 27.995 Fuel valves
- § 27.997 Fuel strainer or filter
- § 27.999 Fuel system drains
- § 27.1011 Engines: General
- § 27.1013 Oil tanks
- § 27.1015 Oil tank tests
- § 27.1017 Oil lines and fittings
- § 27.1019 Oil strainer or filter
- § 27.1021 Oil system drains
- § 27.1027 Transmissions and gearboxes: General
- § 27.1041 General
- § 27.1043 Cooling tests
- § 27.1045 Cooling test procedures
- § 27.1091 Air induction
- § 27.1093 Induction system icing protection
- § 27.1121 General
- § 27.1123 Exhaust piping
- § 27.1141 Powerplant controls: general
- § 27.1143 Engine controls
- § 27.1145 Ignition switches
- § 27.1147 Mixture controls
- § 27.1151 Rotor brake controls
- § 27.1163 Powerplant accessories
- § 27.1183 Lines, fittings, and components
- § 27.1185 Flammable fluids
- § 27.1187 Ventilation and drainage
- § 27.1189 Shutoff means
- § 27.1191 Firewalls
- § 27.1193 Cowling and engine compartment covering
- § 27.1194 Other surfaces
- § 27.1195 Fire detector systems
- § 27.1301 Function and installation
- § 27.1303 Flight and navigation instruments
- § 27.1305 Powerplant instruments
- § 27.1307 Miscellaneous equipment
- § 27.1309 Equipment, systems, and installations
- § 27.1316 Electrical and electronic system lightning protection
- § 27.1317 High-intensity Radiated Fields (HIRF) Protection
- § 27.1321 Arrangement and visibility
- § 27.1322 Warning, caution, and advisory lights
- § 27.1323 Airspeed indicating system
- § 27.1325 Static pressure systems
- § 27.1327 Magnetic direction indicator
- § 27.1329 Automatic pilot system
- § 27.1335 Flight director systems
- § 27.1337 Powerplant instruments
- § 27.1351 General
- § 27.1353 Storage battery design and installation
- § 27.1357 Circuit protective devices
- § 27.1361 Master switch
- § 27.1365 Electric cables
- § 27.1367 Switches
- § 27.1381 Instrument lights
- § 27.1383 Landing lights
- § 27.1385 Position light system installation
- § 27.1387 Position light system dihedral angles
- § 27.1389 Position light distribution and intensities
- § 27.1391 Minimum intensities in the horizontal plane of forward and rear position lights
- § 27.1393 Minimum intensities in any vertical plane of forward and rear position lights
- § 27.1395 Maximum intensities in overlapping beams of forward and rear position lights
- § 27.1397 Color specifications
- § 27.1399 Riding light
- § 27.1401 Anticollision light system
- § 27.1411 General
- § 27.1413 Safety belts
- § 27.1415 Ditching equipment
- § 27.1419 Ice protection
- § 27.1435 Hydraulic systems
- § 27.1457 Cockpit voice recorders
- § 27.1459 Flight data recorders
- § 27.1461 Equipment containing high energy rotors
- § 27.1501 General
- § 27.1503 Airspeed limitations: general
- § 27.1505 Never-exceed speed
- § 27.1509 Rotor speed
- § 27.1519 Weight and center of gravity
- § 27.1521 Powerplant limitations
- § 27.1523 Minimum flight crew
- § 27.1525 Kinds of operations
- § 27.1527 Maximum operating altitude
- § 27.1529 Instructions for Continued Airworthiness
- § 27.1541 General
- § 27.1543 Instrument markings: general
- § 27.1545 Airspeed indicator
- § 27.1547 Magnetic direction indicator
- § 27.1549 Powerplant instruments
- § 27.1551 Oil quantity indicator
- § 27.1553 Fuel quantity indicator
- § 27.1555 Control markings
- § 27.1557 Miscellaneous markings and placards
- § 27.1559 Limitations placard
- § 27.1561 Safety equipment
- § 27.1565 Tail rotor
- § 27.1581 General
- § 27.1583 Operating limitations
- § 27.1585 Operating procedures
- § 27.1587 Performance information
- § 27.1589 Loading information
- Appendix A to Part 27—Instructions for Continued Airworthiness
- Appendix B to Part 27—Airworthiness Criteria for Helicopter Instrument Flight
- Appendix C to Part 27—Criteria for Category A
- Appendix D to Part 27—HIRF Environments and Equipment HIRF Test Levels