63 

Federal Aviation Administration, DOT 

Pt. 121 

121.277

Protection of other airplane compo-

nents 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 com-

partments. 

121.287

Carriage of cargo in cargo compart-

ments. 

121.289

Landing gear: Aural warning device. 

121.291

Demonstration of emergency evacu-

ation 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 equip-

ment. 

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 har-

nesses. 

121.312

Materials for compartment inte-

riors. 

121.313

Miscellaneous equipment. 

121.314

Cargo and baggage compartments. 

121.315

Cockpit check procedure. 

121.316

Fuel tanks. 

121.317

Passenger information require-

ments, smoking prohibitions, and addi-
tional seat belt requirements. 

121.318

Public address system. 

121.319

Crewmember interphone system. 

121.321

Operations in icing. 

121.323

Instruments and equipment for oper-

ations at night. 

121.325

Instruments and equipment for oper-

ations under IFR or over-the-top. 

121.327

Supplemental oxygen: Reciprocating 

engine powered airplanes. 

121.329

Supplemental oxygen for suste-

nance: Turbine engine powered airplanes. 

121.331

Supplemental oxygen requirements 

for pressurized cabin airplanes: Recipro-
cating 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. 

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 oper-
ations and for certain other operations. 

121.353

Emergency equipment for operations 

over uninhabited terrain areas: Flag, 
supplemental, and certain domestic oper-
ators. 

121.354

Terrain awareness and warning sys-

tem. 

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] 

Subpart L—Maintenance, Preventive 

Maintenance, and Alterations 

121.361

Applicability. 

121.363

Responsibility for airworthiness. 

121.365

Maintenance, preventive mainte-

nance, and alteration organization. 

121.367

Maintenance, preventive mainte-

nance, 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 surveil-

lance. 

121.374

Continuous airworthiness mainte-

nance program (CAMP) for two-engine 
ETOPS. 

121.375

Maintenance and preventive mainte-

nance training program. 

121.377

Maintenance and preventive mainte-

nance personnel duty time limitations. 

121.378

Certificate requirements. 

121.379

Authority to perform and approve 

maintenance, preventive maintenance, 
and alterations. 

121.380

Maintenance recording require-

ments. 

121.380a

Transfer of maintenance records. 

Subpart M—Airman and Crewmember 

Requirements 

121.381

Applicability. 

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