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Title 14

Displaying title 14, up to date as of 9/10/2026. Title 14 was last amended 9/03/2026.
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Title 14Aeronautics and SpacePart / Section
Chapter IFederal Aviation Administration, Department of Transportation1 – 199
Subchapter GAir Carriers and Operators for Compensation or Hire: Certification and Operations110 – 139
Part 125Certification and Operations: Aircraft Having a Seating Capacity of 20 or More Passengers or a Maximum Payload Capacity of 6,000 Pounds or More; and Rules Governing Persons on Board Such Aircraft125.1 – 125.509
Subpart ESpecial Airworthiness Requirements125.111 – 125.189
§ 125.111General.
§ 125.113Cabin interiors.
§ 125.115Internal doors.
§ 125.117Ventilation.
§ 125.119Fire precautions.
§ 125.121Proof of compliance with § 125.119.
§ 125.123Propeller deicing fluid.
§ 125.125Pressure cross-feed arrangements.
§ 125.127Location of fuel tanks.
§ 125.129Fuel system lines and fittings.
§ 125.131Fuel lines and fittings in designated fire zones.
§ 125.133Fuel valves.
§ 125.135Oil lines and fittings in designated fire zones.
§ 125.137Oil valves.
§ 125.139Oil system drains.
§ 125.141Engine breather lines.
§ 125.143Firewalls.
§ 125.145Firewall construction.
§ 125.147Cowling.
§ 125.149Engine accessory section diaphragm.
§ 125.151Powerplant fire protection.
§ 125.153Flammable fluids.
§ 125.155Shutoff means.
§ 125.157Lines and fittings.
§ 125.159Vent and drain lines.
§ 125.161Fire-extinguishing systems.
§ 125.163Fire-extinguishing agents.
§ 125.165Extinguishing agent container pressure relief.
§ 125.167Extinguishing agent container compartment temperature.
§ 125.169Fire-extinguishing system materials.
§ 125.171Fire-detector systems.
§ 125.173Fire detectors.
§ 125.175Protection of other airplane components against fire.
§ 125.177Control of engine rotation.
§ 125.179Fuel system independence.
§ 125.181Induction system ice prevention.
§ 125.183Carriage of cargo in passenger compartments.
§ 125.185Carriage of cargo in cargo compartments.
§ 125.187Landing gear: Aural warning device.
§ 125.189Demonstration of emergency evacuation procedures.