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Title 14

Displaying title 14, up to date as of 7/09/2026. 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 CAircraft21 – 59
Part 27Airworthiness Standards: Normal Category Rotorcraft27.1 – 27.1589
Subpart EPowerplant27.901 – 27.1195
General27.901 – 27.907
§ 27.901Installation.
§ 27.903Engines.
§ 27.907Engine vibration.
Rotor Drive System27.917 – 27.939
§ 27.917Design.
§ 27.921Rotor brake.
§ 27.923Rotor drive system and control mechanism tests.
§ 27.927Additional tests.
§ 27.931Shafting critical speed.
§ 27.935Shafting joints.
§ 27.939Turbine engine operating characteristics.
Fuel System27.951 – 27.977
§ 27.951General.
§ 27.952Fuel system crash resistance.
§ 27.953Fuel system independence.
§ 27.954Fuel system lightning protection.
§ 27.955Fuel flow.
§ 27.959Unusable fuel supply.
§ 27.961Fuel system hot weather operation.
§ 27.963Fuel tanks: general.
§ 27.965Fuel tank tests.
§ 27.967Fuel tank installation.
§ 27.969Fuel tank expansion space.
§ 27.971Fuel tank sump.
§ 27.973Fuel tank filler connection.
§ 27.975Fuel tank vents.
§ 27.977Fuel tank outlet.
Fuel System Components27.991 – 27.999
§ 27.991Fuel pumps.
§ 27.993Fuel system lines and fittings.
§ 27.995Fuel valves.
§ 27.997Fuel strainer or filter.
§ 27.999Fuel system drains.
Oil System27.1011 – 27.1027
§ 27.1011Engines: General.
§ 27.1013Oil tanks.
§ 27.1015Oil tank tests.
§ 27.1017Oil lines and fittings.
§ 27.1019Oil strainer or filter.
§ 27.1021Oil system drains.
§ 27.1027Transmissions and gearboxes: General.
Cooling27.1041 – 27.1045
§ 27.1041General.
§ 27.1043Cooling tests.
§ 27.1045Cooling test procedures.
Induction System27.1091 – 27.1093
§ 27.1091Air induction.
§ 27.1093Induction system icing protection.
Exhaust System27.1121 – 27.1123
§ 27.1121General.
§ 27.1123Exhaust piping.
Powerplant Controls and Accessories27.1141 – 27.1163
§ 27.1141Powerplant controls: general.
§ 27.1143Engine controls.
§ 27.1145Ignition switches.
§ 27.1147Mixture controls.
§ 27.1151Rotor brake controls.
§ 27.1163Powerplant accessories.
Powerplant Fire Protection27.1183 – 27.1195
§ 27.1183Lines, fittings, and components.
§ 27.1185Flammable fluids.
§ 27.1187Ventilation and drainage.
§ 27.1189Shutoff means.
§ 27.1191Firewalls.
§ 27.1193Cowling and engine compartment covering.
§ 27.1194Other surfaces.
§ 27.1195Fire detector systems.