Federal Aviation Administration, DOT

Pt. 121
121.344 Digital flight data recorders for
transport category airplanes.
121.344a Digital flight data recorders for 10-
19 seat airplanes.
121.345 Radio equipment.
121.346 Flight data recorders: filtered data.
121.347 Communication
and
navigation
equipment for operations under VFR
over routes navigated by pilotage.
121.349 Communication
and
navigation
equipment for operations under VFR
over routes not navigated by pilotage or
for operations under IFR or over the top.
121.351 Communication
and
navigation
equipment for extended over-water operations and for certain other operations.
121.353 Emergency equipment for operations
over uninhabited terrain areas: Flag,
supplemental, and certain domestic operators.
121.354 Terrain awareness and warning system.
121.355 Equipment for operations on which
specialized means of navigation are used.
121.356 Collision Avoidance System.
121.357 Airborne weather radar equipment
requirements.
121.358 Low-altitude
windshear
system
equipment requirements.
121.359 Cockpit voice recorders.
121.360 [Reserved]

121.277 Protection of other airplane components against fire.
121.279 Control of engine rotation.
121.281 Fuel system independence.
121.283 Induction system ice prevention.
121.285 Carriage of cargo in passenger compartments.
121.287 Carriage of cargo in cargo compartments.
121.289 Landing gear: Aural warning device.
121.291 Demonstration of emergency evacuation procedures.
121.293 Special airworthiness requirements
for nontransport category airplanes type
certificated after December 31, 1964.
121.295 Location for a suspect device.

Subpart K - Instrument and Equipment
Requirements
121.301 Applicability.
121.303 Airplane instruments and equipment.
121.305 Flight and navigational equipment.
121.306 Portable electronic devices.
121.307 Engine instruments.
121.308 Lavatory fire protection.
121.309 Emergency equipment.
121.310 Additional emergency equipment.
121.311 Seats, safety belts, and shoulder harnesses.
121.312 Materials for compartment interiors.
121.313 Miscellaneous equipment.
121.314 Cargo and baggage compartments.
121.315 Cockpit check procedure.
121.316 Fuel tanks.
121.317 Passenger
information
requirements, smoking prohibitions, and additional seat belt requirements.
121.318 Public address system.
121.319 Crewmember interphone system.
121.321 Operations in icing.
121.323 Instruments and equipment for operations at night.
121.325 Instruments and equipment for operations under IFR or over-the-top.
121.327 Supplemental oxygen: Reciprocating
engine powered airplanes.
121.329 Supplemental oxygen for sustenance: Turbine engine powered airplanes.
121.331 Supplemental oxygen requirements
for pressurized cabin airplanes: Reciprocating engine powered airplanes.
121.333 Supplemental oxygen for emergency
descent and for first aid; turbine engine
powered airplanes with pressured cabins.
121.335 Equipment standards.
121.337 Protective breathing equipment.
121.339 Emergency equipment for extended
over-water operations.
121.340 Emergency flotation means.
121.341 Equipment for operations in icing
conditions.
121.342 Pitot heat indication systems.
121.343 Flight data recorders.

Subpart L - Maintenance, Preventive
Maintenance, and Alterations
121.361 Applicability.
121.363 Responsibility for airworthiness.
121.365 Maintenance, preventive maintenance, and alteration organization.
121.367 Maintenance, preventive maintenance, and alterations programs.
121.368 Contract maintenance.
121.369 Manual requirements.
121.370-121.370a [Reserved]
121.371 Required inspection personnel.
121.373 Continuing analysis and surveillance.
121.374 Continuous airworthiness maintenance program (CAMP) for two-engine
ETOPS.
121.375 Maintenance and preventive maintenance training program.
121.377 Maintenance and preventive maintenance personnel duty time limitations.
121.378 Certificate requirements.
121.379 Authority to perform and approve
maintenance, preventive maintenance,
and alterations.
121.380 Maintenance
recording
requirements.
121.380a Transfer of maintenance records.

Subpart M - Airman and Crewmember
Requirements
121.381

Applicability.

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