14 C.F.R. PART 25--AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
TITLE 14--Aeronautics and Space
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
SUBCHAPTER C--AIRCRAFT
PART 25--AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
Subpart A--GENERAL
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| Special retroactive requirements.
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Subpart B--FLIGHT
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| Load distribution limits.
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| Center of gravity limits.
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| Empty weight and corresponding center of gravity.
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| Propeller speed and pitch limits.
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| Accelerate-stop distance.
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| Takeoff distance and takeoff run.
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| Landing climb: All-engines-operating.
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| Climb: One-engine-inoperative.
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| Directional and lateral control.
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| Static longitudinal stability.
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| Demonstration of static longitudinal stability.
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| Static lateral-directional stability.
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| Longitudinal stability and control.
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| Directional stability and control.
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| Spray characteristics, control, and stability on water.
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| High-speed characteristics.
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| Out-of-trim characteristics.
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Subpart C--STRUCTURE
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| Strength and deformation.
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| Symmetric maneuvering conditions.
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| Flight maneuvering envelope.
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| Limit maneuvering load factors.
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| Gust and turbulence loads.
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| Design fuel and oil loads.
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| Side load on engine and auxiliary power unit mounts.
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| Pressurized compartment loads.
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| Unsymmetrical loads due to engine failure.
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| Control surface loads: General.
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| Loads parallel to hinge line.
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| Secondary control system.
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| Auxiliary aerodynamic surfaces.
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| Landing load conditions and assumptions.
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| Landing gear arrangement.
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| Level landing conditions.
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| Tail-down landing conditions.
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| One-gear landing conditions.
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| Rebound landing condition.
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| Ground handling conditions.
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| Taxi, takeoff and landing roll.
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| Nose-wheel yaw and steering.
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| Ground load: unsymmetrical loads on multiple-wheel units.
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| Jacking and tie-down provisions.
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| Design weights and center of gravity positions.
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| Hull and main float load factors.
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| Hull and main float landing conditions.
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| Hull and main float takeoff condition.
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| Hull and main float bottom pressures.
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| Emergency landing dynamic conditions.
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| Structural ditching provisions.
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| Damage--tolerance and fatigue evaluation of structure.
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Subpart D--DESIGN AND CONSTRUCTION
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| Accessibility provisions.
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| Material strength properties and material design values.
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| Aeroelastic stability requirements.
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| Stability augmentation and automatic and power-operated systems.
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| Control system gust locks.
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| Lift and drag devices, controls.
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| Lift and drag device indicator.
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| Flap and slat interconnection.
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| Brakes and braking systems.
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| Motion and effect of cockpit controls.
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| Cockpit control knob shape.
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| Seats, berths, safety belts, and harnesses.
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| Retention of items of mass in passenger and crew compartments and galleys.
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| Passenger information signs and placards.
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| Emergency exit arrangement.
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| Emergency egress assist means and escape routes.
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| Maximum number of seats abreast.
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| Lower deck service compartments (including galleys).
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| Cabin ozone concentration.
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| Combustion heating systems.
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| Tests for pressurized cabins.
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| Lavatory fire protection.
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| Cargo or baggage compartments.
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| Thermal/Acoustic insulation materials.
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| Cargo compartment classification.
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| Cargo or baggage compartment smoke or fire detection systems.
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| Combustion heater fire protection.
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| Flammable fluid fire protection.
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| Fire protection of flight controls, engine mounts, and other flight structure.
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| Fire protection: other components.
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| Fire protection: systems.
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| Reinforcement near propellers.
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Subpart E--POWERPLANT
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| Automatic takeoff thrust control system (ATTCS).
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| Turbojet engine thrust reverser system tests.
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| Turbopropeller-drag limiting systems.
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| Turbine engine operating characteristics.
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| Inlet, engine, and exhaust compatibility.
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| Thrust or power augmentation system.
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| Fuel system analysis and test.
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| Fuel system independence.
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| Fuel system lightning protection.
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| Flow between interconnected tanks.
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| Fuel system hot weather operation.
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| Fuel tank expansion space.
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| Fuel tank filler connection.
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| Fuel tank vents and carburetor vapor vents.
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| Fuel tank ignition prevention.
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| Fuel system lines and fittings.
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| Propeller feathering system.
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| Induction system icing protection.
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| Carburetor air preheater design.
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| Induction system ducts and air duct systems.
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| Induction system screens.
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| Inter-coolers and after-coolers.
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| Exhaust driven turbo-superchargers.
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| Powerplant controls: general.
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| Auxiliary power unit controls.
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| Propeller speed and pitch controls.
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| Propeller feathering controls.
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| Reverse thrust and propeller pitch settings below the flight regime.
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| Carburetor air temperature controls.
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| Fuel jettisoning system controls.
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| Designated fire zones; regions included.
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| Nacelle areas behind firewalls, and engine pod attaching structures containing flammable fluid lines.
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| Flammable fluid-carrying components.
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| Drainage and ventilation of fire zones.
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| Engine accessory section diaphragm.
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| Cowling and nacelle skin.
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| Fire extinguishing systems.
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| Fire extinguishing agents.
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| Extinguishing agent containers.
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| Fire extinguishing system materials.
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Subpart F--EQUIPMENT
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| Function and installation.
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| Flight and navigation instruments.
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| Equipment, systems, and installations.
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| System lightning protection.
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| Arrangement and visibility.
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| Warning, caution, and advisory lights.
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| Airspeed indicating system.
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| Pitot heat indication systems.
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| Magnetic direction indicator.
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| Instruments using a power supply.
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| Electrical equipment and installations.
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| Circuit protective devices.
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| Position light system installation.
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| Position light system dihedral angles.
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| Position light distribution and intensities.
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| Minimum intensities in the horizontal plane of forward and rear position lights.
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| Minimum intensities in any vertical plane of forward and rear position lights.
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| Maximum intensities in overlapping beams of forward and rear position lights.
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| Anticollision light system.
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| Wing icing detection lights.
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| Pressurization and pneumatic systems.
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| Protective breathing equipment.
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| Oxygen equipment and supply.
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| Minimum mass flow of supplemental oxygen.
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| Equipment standards for the oxygen distributing system.
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| Equipment standards for oxygen dispensing units.
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| Means for determining use of oxygen.
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| Chemical oxygen generators.
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| Protection of oxygen equipment from rupture.
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| Draining of fluids subject to freezing.
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| Equipment containing high energy rotors.
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Subpart G--OPERATING LIMITATIONS AND INFORMATION
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| Airspeed limitations: general.
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| Maximum operating limit speed.
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| Weight, center of gravity, and weight distribution.
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| Auxiliary power unit limitations.
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| Ambient air temperature and operating altitude.
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| Instructions for continued Airworthiness.
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| Maneuvering flight load factors.
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| Additional operating limitations.
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| Instrument markings: general.
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| Airspeed limitation information.
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| Magnetic direction indicator.
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| Powerplant and auxiliary power unit instruments.
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| Miscellaneous markings and placards.
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