FAA Federal Aviation Regulations (FARS, 14 CFR)

FARs   >   Part 25 - Airworthiness standards: Transport category airplanes

• SFAR No. 13

• SUBPART A - General
• FAR 25.1 - Applicability
• FAR 25.2 - Special retroactive requirements

• SUBPART B - Flight
• General
  FAR 25.21 - Proof of compliance
• FAR 25.23 - Load distribution limits
• FAR 25.25 - Weight limits
• FAR 25.27 - Center of gravity limits
• FAR 25.29 - Empty weight and corresponding center of gravity
• FAR 25.31 - Removable ballast
• FAR 25.33 - Propeller speed and pitch limits
• Performance
  FAR 25.101 - General
• FAR 25.103 - Stall speed
• FAR 25.105 - Takeoff
• FAR 25.107 - Takeoff speeds
• FAR 25.109 - Accelerate-stop distance
• FAR 25.111 - Takeoff path
• FAR 25.113 - Takeoff distance and takeoff run
• FAR 25.115 - Takeoff flight path
• FAR 25.117 - Climb: general
• FAR 25.119 - Landing climb: All-engines-operating
• FAR 25.121 - Climb: One-engine-inoperative
• FAR 25.123 - En route flight paths
• FAR 25.125 - Landing
• Controllability and Maneuverability
  FAR 25.143 - General
• FAR 25.145 - Longitudinal control
• FAR 25.147 - Directional and lateral control
• FAR 25.149 - Minimum control speed
• Trim
  FAR 25.161 - Trim
• Stability
  FAR 25.171 - General
• FAR 25.173 - Static longitudinal stability
• FAR 25.175 - Demonstration of static longitudinal stability
• FAR 25.177 - Static lateral-directional stability
• FAR 25.181 - Dynamic stability
• Stalls
  FAR 25.201 - Stall demonstration
• FAR 25.203 - Stall characteristics
• FAR 25.207 - Stall warning
• Ground and Water Handling Characteristics
  FAR 25.231 - Longitudinal stability and control
• FAR 25.233 - Directional stability and control
• FAR 25.235 - Taxiing condition
• FAR 25.237 - Wind velocities
• FAR 25.239 - Spray characteristics, control, and stability on water
• Miscellaneous Flight Requirements
  FAR 25.251 - Vibration and buffeting
• FAR 25.253 - High-speed characteristics
• FAR 25.255 - Out-of-trim characteristics

• SUBPART C - Structure
• General
  FAR 25.301 - Loads
• FAR 25.303 - Factor of safety
• FAR 25.305 - Strength and deformation
• FAR 25.307 - Proof of structure
• Flight Loads
  FAR 25.321 - General
• Flight Maneuver and Gust Conditions
  FAR 25.331 - Symmetric maneuvering conditions
• FAR 25.333 - Flight maneuvering envelope
• FAR 25.335 - Design airspeeds
• FAR 25.337 - Limit maneuvering load factors
• FAR 25.341 - Gust and turbulence loads
• FAR 25.343 - Design fuel and oil loads
• FAR 25.345 - High lift devices
• FAR 25.349 - Rolling conditions
• FAR 25.351 - Yaw maneuver conditions
• Supplementary Conditions
  FAR 25.361 - Engine torque
• FAR 25.363 - Side load on engine and auxiliary power unit mounts
• FAR 25.365 - Pressurized compartment loads
• FAR 25.367 - Unsymmetrical loads due to engine failure
• FAR 25.371 - Gyroscopic loads
• FAR 25.373 - Speed control devices
• Control Surface and System Loads
  FAR 25.391 - Control surface loads: General
• FAR 25.393 - Loads parallel to hinge line
• FAR 25.395 - Control system
• FAR 25.397 - Control system loads
• FAR 25.399 - Dual control system
• FAR 25.405 - Secondary control system
• FAR 25.407 - Trim tab effects
• FAR 25.409 - Tabs
• FAR 25.415 - Ground gust conditions
• FAR 25.427 - Unsymmetrical loads
• FAR 25.445 - Auxiliary aerodynamic surfaces
• FAR 25.457 - Wing flaps
• FAR 25.459 - Special devices
• Ground Loads
  FAR 25.471 - General
• FAR 25.473 - Landing load conditions and assumptions
• FAR 25.477 - Landing gear arrangement
• FAR 25.479 - Level landing conditions
• FAR 25.481 - Tail-down landing conditions
• FAR 25.483 - One-gear landing conditions
• FAR 25.485 - Side load conditions
• FAR 25.487 - Rebound landing condition
• FAR 25.489 - Ground handling conditions
• FAR 25.491 - Taxi, takeoff and landing roll
• FAR 25.493 - Braked roll conditions
• FAR 25.495 - Turning
• FAR 25.497 - Tail-wheel yawing
• FAR 25.499 - Nose-wheel yaw and steering
• FAR 25.503 - Pivoting
• FAR 25.507 - Reversed braking
• FAR 25.509 - Towing loads
• FAR 25.511 - Ground load: unsymmetrical loads on multiple-wheel units
• FAR 25.519 - Jacking and tie-down provisions
• Water Loads
  FAR 25.521 - General
• FAR 25.523 - Design weights and center of gravity positions
• FAR 25.525 - Application of loads
• FAR 25.527 - Hull and main float load factors
• FAR 25.529 - Hull and main float landing conditions
• FAR 25.531 - Hull and main float takeoff condition
• FAR 25.533 - Hull and main float bottom pressures
• FAR 25.535 - Auxiliary float loads
• FAR 25.537 - Seawing loads
• Emergency Landing Conditions
  FAR 25.561 - General
• FAR 25.562 - Emergency landing dynamic conditions
• FAR 25.563 - Structural ditching provisions
• Fatigue Evaluation
  FAR 25.571 - Damage -- tolerance and fatigue evaluation of structure
• Lightning protection
  FAR 25.581 - Lightning protection

• SUBPART D - Design and Construction
• General
  FAR 25.601 - General
• FAR 25.603 - Materials
• FAR 25.605 - Fabrication methods
• FAR 25.607 - Fasteners
• FAR 25.609 - Protection of structure
• FAR 25.611 - Accessibility provisions
• FAR 25.613 - Material strength properties and design values
• FAR 25.619 - Special factors
• FAR 25.621 - Casting factors
• FAR 25.623 - Bearing factors
• FAR 25.625 - Fitting factors
• FAR 25.629 - Aeroelastic stability requirements
• FAR 25.631 - Bird strike damage
• Control Surfaces
  FAR 25.651 - Proof of strength
• FAR 25.655 - Installation
• FAR 25.657 - Hinges
• Control Systems
  FAR 25.671 - General
• FAR 25.672 - Stability augmentation and automatic and power-operated systems
• FAR 25.675 - Stops
• FAR 25.677 - Trim systems
• FAR 25.679 - Control system gust locks
• FAR 25.681 - Limit load static tests
• FAR 25.683 - Operation tests
• FAR 25.685 - Control system details
• FAR 25.689 - Cable systems
• FAR 25.693 - Joints
• FAR 25.697 - Lift and drag devices, controls
• FAR 25.699 - Lift and drag device indicator
• FAR 25.701 - Flap and slat interconnection
• FAR 25.703 - Takeoff warning system
• Landing Gear
  FAR 25.721 - General
• FAR 25.723 - Shock absorption tests
• FAR 25.725 - [Reserved]
• FAR 25.727 - [Reserved]
• FAR 25.729 - Retracting mechanism
• FAR 25.731 - Wheels
• FAR 25.733 - Tires
• FAR 25.735 - Brakes and braking systems
• FAR 25.737 - Skis
• Floats and Hulls
  FAR 25.751 - Main float buoyancy
• FAR 25.753 - Main float design
• FAR 25.755 - Hulls
• Personnel and Cargo Accommodations
  FAR 25.771 - Pilot compartment
• FAR 25.772 - Pilot compartment doors
• FAR 25.773 - Pilot compartment view
• FAR 25.775 - Windshields and windows
• FAR 25.777 - Cockpit controls
• FAR 25.779 - Motion and effect of cockpit controls
• FAR 25.781 - Cockpit control knob shape
• FAR 25.783 - Doors
• FAR 25.785 - Seats, berths, safety belts, and harnesses
• FAR 25.787 - Stowage compartments
• FAR 25.789 - Retention of items of mass in passenger and crew compartments and galleys
• FAR 25.791 - Passenger information signs and placards
• FAR 25.793 - Floor surfaces
• FAR 25.795 - Security considerations
• Emergency Provisions
  FAR 25.801 - Ditching
• FAR 25.803 - Emergency evacuation
• FAR 25.807 - Emergency exits
• FAR 25.809 - Emergency exit arrangement
• FAR 25.810 - Emergency egress assist means and escape routes
• FAR 25.811 - Emergency exit marking
• FAR 25.812 - Emergency lighting
• FAR 25.813 - Emergency exit access
• FAR 25.815 - Width of aisle
• FAR 25.817 - Maximum number of seats abreast
• FAR 25.819 - Lower deck service compartments (including galleys)
• Ventilation and Heating
  FAR 25.831 - Ventilation
• FAR 25.832 - Cabin ozone concentration
• FAR 25.833 - Combustion heating systems
• Pressurization
  FAR 25.841 - Pressurized cabins
• FAR 25.843 - Tests for pressurized cabins
• Fire Protection
  FAR 25.851 - Fire extinguishers
• FAR 25.853 - Compartment interiors
• FAR 25.854 - Lavatory fire protection
• FAR 25.855 - Cargo or baggage compartments
• FAR 25.857 - Cargo compartment classification
• FAR 25.858 - Cargo or baggage compartment smoke or fire detection systems
• FAR 25.859 - Combustion heater fire protection
• FAR 25.863 - Flammable fluid fire protection
• FAR 25.865 - Fire protection of flight controls, engine mounts, and other flight structure
• FAR 25.867 - Fire protection: other components
• FAR 25.869 - Fire protection: systems
• Miscellaneous
  FAR 25.871 - Leveling means
• FAR 25.875 - Reinforcement near propellers

• SUBPART E - Powerplant
• General
  FAR 25.901 - Installation
• FAR 25.903 - Engines
• FAR 25.904 - Automatic takeoff thrust control system (ATTCS)
• FAR 25.905 - Propellers
• FAR 25.907 - Propeller vibration
• FAR 25.925 - Propeller clearance
• FAR 25.929 - Propeller deicing
• FAR 25.933 - Reversing systems
• FAR 25.934 - Turbojet engine thrust reverser system tests
• FAR 25.937 - Turbopropeller-drag limiting systems
• FAR 25.939 - Turbine engine operating characteristics
• FAR 25.941 - Inlet, engine, and exhaust compatibility
• FAR 25.943 - Negative acceleration
• FAR 25.945 - Thrust or power augmentation system
• Fuel System
  FAR 25.951 - General
• FAR 25.952 - Fuel system analysis and test
• FAR 25.953 - Fuel system independence
• FAR 25.954 - Fuel system lightning protection
• FAR 25.955 - Fuel flow
• FAR 25.957 - Flow between interconnected tanks
• FAR 25.959 - Unusable fuel supply
• FAR 25.961 - Fuel system hot weather operation
• FAR 25.963 - Fuel tanks: general
• FAR 25.965 - Fuel tank tests
• FAR 25.967 - Fuel tank installations
• FAR 25.969 - Fuel tank expansion space
• FAR 25.971 - Fuel tank sump
• FAR 25.973 - Fuel tank filler connection
• FAR 25.975 - Fuel tank vents and carburetor vapor vents
• FAR 25.977 - Fuel tank outlet
• FAR 25.979 - Pressure fueling system
• FAR 25.981 - Fuel tank ignition prevention
• Fuel System Components
  FAR 25.991 - Fuel pumps
• FAR 25.993 - Fuel system lines and fittings
• FAR 25.994 - Fuel system components
• FAR 25.995 - Fuel valves
• FAR 25.997 - Fuel strainer or filter
• FAR 25.999 - Fuel system drains
• FAR 25.1001 - Fuel jettisoning system
• Oil System
  FAR 25.1011 - General
• FAR 25.1013 - Oil tanks
• FAR 25.1015 - Oil tank tests
• FAR 25.1017 - Oil lines and fittings
• FAR 25.1019 - Oil strainer or filter
• FAR 25.1021 - Oil system drains
• FAR 25.1023 - Oil radiators
• FAR 25.1025 - Oil valves
• FAR 25.1027 - Propeller feathering system
• Cooling
  FAR 25.1041 - General
• FAR 25.1043 - Cooling tests
• FAR 25.1045 - Cooling test procedures
• Induction System
  FAR 25.1091 - Air induction
• FAR 25.1093 - Induction system icing protection
• FAR 25.1101 - Carburetor air preheater design
• FAR 25.1103 - Induction system ducts and air duct systems
• FAR 25.1105 - Induction system screens
• FAR 25.1107 - Inter-coolers and after-coolers
• Exhaust System
  FAR 25.1121 - General
• FAR 25.1123 - Exhaust piping
• FAR 25.1125 - Exhaust heat exchangers
• FAR 25.1127 - Exhaust driven turbo-superchargers
• Powerplant Controls and Accessories
  FAR 25.1141 - Powerplant controls: general
• FAR 25.1142 - Auxiliary power unit controls
• FAR 25.1143 - Engine controls
• FAR 25.1145 - Ignition switches
• FAR 25.1147 - Mixture controls
• FAR 25.1149 - Propeller speed and pitch controls
• FAR 25.1153 - Propeller feathering controls
• FAR 25.1155 - Reverse thrust and propeller pitch settings below the flight regime
• FAR 25.1157 - Carburetor air temperature controls
• FAR 25.1159 - Supercharger controls
• FAR 25.1161 - Fuel jettisoning system controls
• FAR 25.1163 - Powerplant accessories
• FAR 25.1165 - Engine ignition systems
• FAR 25.1167 - Accessory gearboxes
• Powerplant Fire Protection
  FAR 25.1181 - Designated fire zones; regions included
• FAR 25.1182 - Nacelle areas behind firewalls, and engine pod attaching structures containing flammable fluid lines
• FAR 25.1183 - Flammable fluid-carrying components
• FAR 25.1185 - Flammable fluids
• FAR 25.1187 - Drainage and ventilation of fire zones
• FAR 25.1189 - Shutoff means
• FAR 25.1191 - Firewalls
• FAR 25.1192 - Engine accessory section diaphragm
• FAR 25.1193 - Cowling and nacelle skin
• FAR 25.1195 - Fire extinguishing systems
• FAR 25.1197 - Fire extinguishing agents
• FAR 25.1199 - Extinguishing agent containers
• FAR 25.1201 - Fire extinguishing system materials
• FAR 25.1203 - Fire detector system
• FAR 25.1207 - Compliance

• SUBPART F - Equipment
• General
  FAR 25.1301 - Function and installation
• FAR 25.1303 - Flight and navigation instruments
• FAR 25.1305 - Powerplant instruments
• FAR 25.1307 - Miscellaneous equipment
• FAR 25.1309 - Equipment, systems, and installations
• FAR 25.1316 - System lightning protection
• Instruments: Installation
  FAR 25.1321 - Arrangement and visibility
• FAR 25.1322 - Warning, caution, and advisory lights
• FAR 25.1323 - Airspeed indicating system
• FAR 25.1325 - Static pressure systems
• FAR 25.1326 - Pitot heat indication systems
• FAR 25.1327 - Magnetic direction indicator
• FAR 25.1329 - Automatic pilot system
• FAR 25.1331 - Instruments using a power supply
• FAR 25.1333 - Instrument systems
• FAR 25.1335 - Flight director systems
• FAR 25.1337 - Powerplant instruments
• Electrical Systems and Equipment
  FAR 25.1351 - General
• FAR 25.1353 - Electrical equipment and installations
• FAR 25.1355 - Distribution system
• FAR 25.1357 - Circuit protective devices
• FAR 25.1363 - Electrical system tests
• Lights
  FAR 25.1381 - Instrument lights
• FAR 25.1383 - Landing lights
• FAR 25.1385 - Position light system installation
• FAR 25.1387 - Position light system dihedral angles
• FAR 25.1389 - Position light distribution and intensities
• FAR 25.1391 - Minimum intensities in the horizontal plane of forward and rear position lights
• FAR 25.1393 - Minimum intensities in any vertical plane of forward and rear position lights
• FAR 25.1395 - Maximum intensities in overlapping beams of forward and rear position lights
• FAR 25.1397 - Color specifications
• FAR 25.1399 - Riding light
• FAR 25.1401 - Anticollision light system
• FAR 25.1403 - Wing icing detection lights
• Safety Equipment
  FAR 25.1411 - General
• FAR 25.1415 - Ditching equipment
• FAR 25.1419 - Ice protection
• FAR 25.1421 - Megaphones
• FAR 25.1423 - Public address system
• Miscellaneous Equipment
  FAR 25.1431 - Electronic equipment
• FAR 25.1433 - Vacuum systems
• FAR 25.1435 - Hydraulic systems
• FAR 25.1438 - Pressurization and pneumatic systems
• FAR 25.1439 - Protective breathing equipment
• FAR 25.1441 - Oxygen equipment and supply
• FAR 25.1443 - Minimum mass flow of supplemental oxygen
• FAR 25.1445 - Equipment standards for the oxygen distributing system
• FAR 25.1447 - Equipment standards for oxygen dispensing units
• FAR 25.1449 - Means for determining use of oxygen
• FAR 25.1450 - Chemical oxygen generators
• FAR 25.1453 - Protection of oxygen equipment from rupture
• FAR 25.1455 - Draining of fluids subject to freezing
• FAR 25.1457 - Cockpit voice recorders
• FAR 25.1459 - Flight recorders
• FAR 25.1461 - Equipment containing high energy rotors

• SUBPART G - Operating Limitations and Information
• General
  FAR 25.1501 - General
• Operating Limitations
  FAR 25.1503 - Airspeed limitations: general
• FAR 25.1505 - Maximum operating limit speed
• FAR 25.1507 - Maneuvering speed
• FAR 25.1511 - Flap extended speed
• FAR 25.1513 - Minimum control speed
• FAR 25.1515 - Landing gear speeds
• FAR 25.1516 - Other speed limitations
• FAR 25.1517 - Rough air speed, VRA
• FAR 25.1519 - Weight, center of gravity, and weight distribution
• FAR 25.1521 - Powerplant limitations
• FAR 25.1522 - Auxiliary power unit limitations
• FAR 25.1523 - Minimum flight crew
• FAR 25.1525 - Kinds of operation
• FAR 25.1527 - Ambient air temperature and operating altitude
• FAR 25.1529 - Instructions for Continued Airworthiness
• FAR 25.1531 - Maneuvering flight load factors
• FAR 25.1533 - Additional operating limitations
• Markings and Placards
  FAR 25.1541 - General
• FAR 25.1543 - Instrument markings: general
• FAR 25.1545 - Airspeed limitation information
• FAR 25.1547 - Magnetic direction indicator
• FAR 25.1549 - Powerplant and auxiliary power unit instruments
• FAR 25.1551 - Oil quantity indication
• FAR 25.1553 - Fuel quantity indicator
• FAR 25.1555 - Control markings
• FAR 25.1557 - Miscellaneous markings and placards
• FAR 25.1561 - Safety equipment
• FAR 25.1563 - Airspeed placard
• Airplane Flight Manual
  FAR 25.1581 - General
• FAR 25.1583 - Operating limitations
• FAR 25.1585 - Operating procedures
• FAR 25.1587 - Performance information

• Appendix A to Part 25
• Appendix B to Part 25
• Appendix C to Part 25
• Appendix D to Part 25
• Appendix E1 to Part 25 - Limited Weight Credit For Airplanes Equipped With Standby Power
• Appendix E2 to Part 25 - Performance Credit for Transport Category Airplanes Equipped With Standby Power
• Appendix F1 to Part 25 - Test Criteria and Procedures for Showing Compliance with Sec. 25.853 or Sec. 25.855
• Appendix F2 to Part 25 - Flammability of Seat Cushions
• Appendix F3 to Part 25 - Test Method to Determine Flame Penetration Resistance of Cargo Compartment Liners
• Appendix F4 to Part 25 - Test Method to Determine the Heat Release Rate From Cabin Materials Exposed to Radiant Heat
• Appendix F5 to Part 25 - Test Method to Determine the Smoke Emission Characteristics of Cabin Materials
• Appendix F6 to Part 25 - Test Method To Determine the Flammability and Flame Propagation Characteristics of Thermal/Acoustic Insulation Materials
• Appendix F7 to Part 25 - Test Method To Determine the Burnthrough Resistance of Thermal/Acoustic Insulation Materials
• Appendix G to Part 25 - Continuous Gust Design Criteria
• Appendix H to Part 25 - Instructions for Continued Airworthiness
• Appendix I to Part 25 - Installation of an Automatic Takeoff Thrust Control System (ATTCS)
• Appendix J to Part 25 - Emergency Evacuation

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