Site Feedback

Title 14

Displaying title 14, up to date as of 7/08/2026. Title 14 was last amended 7/06/2026.
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

Title 14Aeronautics and SpacePart / Section
Chapter IFederal Aviation Administration, Department of Transportation1 – 199
Subchapter CAircraft21 – 59
Part 25Airworthiness Standards: Transport Category Airplanes25.1 – 25.1801
Subpart DDesign and Construction25.601 – 25.899
General25.601 – 25.631
§ 25.601General.
§ 25.603Materials.
§ 25.605Fabrication methods.
§ 25.607Fasteners.
§ 25.609Protection of structure.
§ 25.611Accessibility provisions.
§ 25.613Material strength properties and material design values.
§ 25.619Special factors.
§ 25.621Casting factors.
§ 25.623Bearing factors.
§ 25.625Fitting factors.
§ 25.629Aeroelastic stability requirements.
§ 25.631Bird strike damage.
Control Surfaces25.651 – 25.657
§ 25.651Proof of strength.
§ 25.655Installation.
§ 25.657Hinges.
Control Systems25.671 – 25.703
§ 25.671General.
§ 25.672Stability augmentation and automatic and power-operated systems.
§ 25.675Stops.
§ 25.677Trim systems.
§ 25.679Control system gust locks.
§ 25.681Limit load static tests.
§ 25.683Operation tests.
§ 25.685Control system details.
§ 25.689Cable systems.
§ 25.693Joints.
§ 25.697Lift and drag devices, controls.
§ 25.699Lift and drag device indicator.
§ 25.701Flap and slat interconnection.
§ 25.703Takeoff warning system.
Landing Gear25.721 – 25.737
§ 25.721General.
§ 25.723Shock absorption tests.
§§ 25.725-25.727 [Reserved]
§ 25.729Retracting mechanism.
§ 25.731Wheels.
§ 25.733Tires.
§ 25.735Brakes and braking systems.
§ 25.737Skis.
Floats and Hulls25.751 – 25.755
§ 25.751Main float buoyancy.
§ 25.753Main float design.
§ 25.755Hulls.
Personnel and Cargo Accommodations25.771 – 25.795
§ 25.771Pilot compartment.
§ 25.772Pilot compartment doors.
§ 25.773Pilot compartment view.
§ 25.775Windshields and windows.
§ 25.777Cockpit controls.
§ 25.779Motion and effect of cockpit controls.
§ 25.781Cockpit control knob shape.
§ 25.783Fuselage doors.
§ 25.785Seats, berths, safety belts, and harnesses.
§ 25.787Stowage compartments.
§ 25.789Retention of items of mass in passenger and crew compartments and galleys.
§ 25.791Passenger information signs and placards.
§ 25.793Floor surfaces.
§ 25.795Security considerations.
Emergency Provisions25.801 – 25.820
§ 25.801Ditching.
§ 25.803Emergency evacuation.
§ 25.807Emergency exits.
§ 25.809Emergency exit arrangement.
§ 25.810Emergency egress assist means and escape routes.
§ 25.811Emergency exit marking.
§ 25.812Emergency lighting.
§ 25.813Emergency exit access.
§ 25.815Width of aisle.
§ 25.817Maximum number of seats abreast.
§ 25.819Lower deck service compartments (including galleys).
§ 25.820Lavatory doors.
Ventilation and Heating25.831 – 25.833
§ 25.831Ventilation.
§ 25.832Cabin ozone concentration.
§ 25.833Combustion heating systems.
Pressurization25.841 – 25.843
§ 25.841Pressurized cabins.
§ 25.843Tests for pressurized cabins.
Fire Protection25.851 – 25.869
§ 25.851Fire extinguishers.
§ 25.853Compartment interiors.
§ 25.854Lavatory fire protection.
§ 25.855Cargo or baggage compartments.
§ 25.856Thermal/Acoustic insulation materials.
§ 25.857Cargo compartment classification.
§ 25.858Cargo or baggage compartment smoke or fire detection systems.
§ 25.859Combustion heater fire protection.
§ 25.863Flammable fluid fire protection.
§ 25.865Fire protection of flight controls, engine mounts, and other flight structure.
§ 25.867Fire protection: other components.
§ 25.869Fire protection: systems.
Miscellaneous25.871 – 25.899
§ 25.871Leveling means.
§ 25.875Reinforcement near propellers.
§ 25.899Electrical bonding and protection against static electricity.