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Title 14

Displaying title 14, up to date as of 7/16/2026. Title 14 was last amended 7/06/2026.
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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 121Operating Requirements: Domestic, Flag, and Supplemental Operations121.1 – 121.1500
Subpart JSpecial Airworthiness Requirements121.211 – 121.295
§ 121.211Applicability.
§ 121.213 [Reserved]
§ 121.215Cabin interiors.
§ 121.217Internal doors.
§ 121.219Ventilation.
§ 121.221Fire precautions.
§ 121.223Proof of compliance with § 121.221.
§ 121.225Propeller deicing fluid.
§ 121.227Pressure cross-feed arrangements.
§ 121.229Location of fuel tanks.
§ 121.231Fuel system lines and fittings.
§ 121.233Fuel lines and fittings in designated fire zones.
§ 121.235Fuel valves.
§ 121.237Oil lines and fittings in designated fire zones.
§ 121.239Oil valves.
§ 121.241Oil system drains.
§ 121.243Engine breather lines.
§ 121.245Fire walls.
§ 121.247Fire-wall construction.
§ 121.249Cowling.
§ 121.251Engine accessory section diaphragm.
§ 121.253Powerplant fire protection.
§ 121.255Flammable fluids.
§ 121.257Shutoff means.
§ 121.259Lines and fittings.
§ 121.261Vent and drain lines.
§ 121.263Fire-extinguishing systems.
§ 121.265Fire-extinguishing agents.
§ 121.267Extinguishing agent container pressure relief.
§ 121.269Extinguishing agent container compartment temperature.
§ 121.271Fire-extinguishing system materials.
§ 121.273Fire-detector systems.
§ 121.275Fire detectors.
§ 121.277Protection of other airplane components against fire.
§ 121.279Control of engine rotation.
§ 121.281Fuel system independence.
§ 121.283Induction system ice prevention.
§ 121.285Carriage of cargo in passenger compartments.
§ 121.287Carriage of cargo in cargo compartments.
§ 121.289Landing gear: Aural warning device.
§ 121.291Demonstration of emergency evacuation procedures.
§ 121.293Special airworthiness requirements for nontransport category airplanes type certificated after December 31, 1964.
§ 121.295Location for a suspect device.