U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

All TitlesTitle 14Chapter IPart 25Subpart F - Subpart F—Equipment

GENERAL
§ 25.1301 - Function and installation.
§ 25.1302 - Installed systems and equipment for use by the flightcrew.
§ 25.1303 - Flight and navigation instruments.
§ 25.1305 - Powerplant instruments.
§ 25.1307 - Miscellaneous equipment.
§ 25.1309 - Equipment, systems, and installations.
§ 25.1310 - Power source capacity and distribution.
§ 25.1316 - Electrical and electronic system lightning protection.
§ 25.1317 - High-intensity Radiated Fields (HIRF) Protection.

INSTRUMENTS: INSTALLATION
§ 25.1321 - Arrangement and visibility.
§ 25.1322 - Flightcrew alerting.
§ 25.1323 - Airspeed indicating system.
§ 25.1324 - Angle of attack system.
§ 25.1325 - Static pressure systems.
§ 25.1326 - Pitot heat indication systems.
§ 25.1327 - Magnetic direction indicator.
§ 25.1329 - Flight guidance system.
§ 25.1331 - Instruments using a power supply.
§ 25.1333 - Instrument systems.
§ 25.1337 - Powerplant instruments.

ELECTRICAL SYSTEMS AND EQUIPMENT
§ 25.1351 - General.
§ 25.1353 - Electrical equipment and installations.
§ 25.1355 - Distribution system.
§ 25.1357 - Circuit protective devices.
§ 25.1360 - Precautions against injury.
§ 25.1362 - Electrical supplies for emergency conditions.
§ 25.1363 - Electrical system tests.
§ 25.1365 - Electrical appliances, motors, and transformers.

LIGHTS
§ 25.1381 - Instrument lights.
§ 25.1383 - Landing lights.
§ 25.1385 - Position light system installation.
§ 25.1387 - Position light system dihedral angles.
§ 25.1389 - Position light distribution and intensities.
§ 25.1391 - Minimum intensities in the horizontal plane of forward and rear position lights.
§ 25.1393 - Minimum intensities in any vertical plane of forward and rear position lights.
§ 25.1395 - Maximum intensities in overlapping beams of forward and rear position lights.
§ 25.1397 - Color specifications.
§ 25.1399 - Riding light.
§ 25.1401 - Anticollision light system.
§ 25.1403 - Wing icing detection lights.

SAFETY EQUIPMENT
§ 25.1411 - General.
§ 25.1415 - Ditching equipment.
§ 25.1419 - Ice protection.
§ 25.1420 - Supercooled large drop icing conditions.
§ 25.1421 - Megaphones.
§ 25.1423 - Public address system.

MISCELLANEOUS EQUIPMENT
§ 25.1431 - Electronic equipment.
§ 25.1433 - Vacuum systems.
§ 25.1435 - Hydraulic systems.
§ 25.1438 - Pressurization and pneumatic systems.
§ 25.1439 - Protective breathing equipment.
§ 25.1441 - Oxygen equipment and supply.
§ 25.1443 - Minimum mass flow of supplemental oxygen.
§ 25.1445 - Equipment standards for the oxygen distributing system.
§ 25.1447 - Equipment standards for oxygen dispensing units.
§ 25.1449 - Means for determining use of oxygen.
§ 25.1450 - Chemical oxygen generators.
§ 25.1453 - Protection of oxygen equipment from rupture.
§ 25.1455 - Draining of fluids subject to freezing.
§ 25.1457 - Cockpit voice recorders.
§ 25.1459 - Flight data recorders.
§ 25.1461 - Equipment containing high energy rotors.
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