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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