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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 CAircraft21 – 59
Part 25Airworthiness Standards: Transport Category Airplanes25.1 – 25.1801
Subpart FEquipment25.1301 – 25.1461
General25.1301 – 25.1317
§ 25.1301Function and installation.
§ 25.1302Installed systems and equipment for use by the flightcrew.
§ 25.1303Flight and navigation instruments.
§ 25.1305Powerplant instruments.
§ 25.1307Miscellaneous equipment.
§ 25.1309Equipment, systems, and installations.
§ 25.1310Power source capacity and distribution.
§ 25.1316Electrical and electronic system lightning protection.
§ 25.1317High-intensity Radiated Fields (HIRF) Protection.
Instruments: Installation25.1321 – 25.1337
§ 25.1321Arrangement and visibility.
§ 25.1322Flightcrew alerting.
§ 25.1323Airspeed indicating system.
§ 25.1324Angle of attack system.
§ 25.1325Static pressure systems.
§ 25.1326Pitot heat indication systems.
§ 25.1327Magnetic direction indicator.
§ 25.1329Flight guidance system.
§ 25.1331Instruments using a power supply.
§ 25.1333Instrument systems.
§ 25.1337Powerplant instruments.
Electrical Systems and Equipment25.1351 – 25.1365
§ 25.1351General.
§ 25.1353Electrical equipment and installations.
§ 25.1355Distribution system.
§ 25.1357Circuit protective devices.
§ 25.1360Precautions against injury.
§ 25.1362Electrical supplies for emergency conditions.
§ 25.1363Electrical system tests.
§ 25.1365Electrical appliances, motors, and transformers.
Lights25.1381 – 25.1403
§ 25.1381Instrument lights.
§ 25.1383Landing lights.
§ 25.1385Position light system installation.
§ 25.1387Position light system dihedral angles.
§ 25.1389Position light distribution and intensities.
§ 25.1391Minimum intensities in the horizontal plane of forward and rear position lights.
§ 25.1393Minimum intensities in any vertical plane of forward and rear position lights.
§ 25.1395Maximum intensities in overlapping beams of forward and rear position lights.
§ 25.1397Color specifications.
§ 25.1399Riding light.
§ 25.1401Anticollision light system.
§ 25.1403Wing icing detection lights.
Safety Equipment25.1411 – 25.1423
§ 25.1411General.
§ 25.1415Ditching equipment.
§ 25.1419Ice protection.
§ 25.1420Supercooled large drop icing conditions.
§ 25.1421Megaphones.
§ 25.1423Public address system.
Miscellaneous Equipment25.1431 – 25.1461
§ 25.1431Electronic equipment.
§ 25.1433Vacuum systems.
§ 25.1435Hydraulic systems.
§ 25.1438Pressurization and pneumatic systems.
§ 25.1439Protective breathing equipment.
§ 25.1441Oxygen equipment and supply.
§ 25.1443Minimum mass flow of supplemental oxygen.
§ 25.1445Equipment standards for the oxygen distributing system.
§ 25.1447Equipment standards for oxygen dispensing units.
§ 25.1449Means for determining use of oxygen.
§ 25.1450Chemical oxygen generators.
§ 25.1453Protection of oxygen equipment from rupture.
§ 25.1455Draining of fluids subject to freezing.
§ 25.1457Cockpit voice recorders.
§ 25.1459Flight data recorders.
§ 25.1461Equipment containing high energy rotors.