14 CFR Part 121 — Operating Requirements: Domestic, Flag, and Supplemental Operations

Contents

3,394 provisions, too many to show on one page. Open a part or section to read it with its history and connections, or search inside the text.

1. 121.1 · Applicability.
2. 121.101 · Weather reporting facilities.
3. 121.103 · En route navigation facilities.
4. 121.105 · Servicing and maintenance facilities.
5. 121.106 · ETOPS Alternate Airport: Rescue and fire fighting service.
6. 121.107 · Dispatch centers.
7. 121.11 · Rules applicable to operations in a foreign country.
8. 121.1101 · Purpose and definition.
9. 121.1103 · [Reserved]
10. 121.1105 · Aging airplane inspections and records reviews.
11. 121.1107 · Repairs assessment for pressurized fuselages.
12. 121.1109 · Supplemental inspections.
13. 121.111 · Applicability.
14. 121.1111 · Electrical wiring interconnection systems (EWIS) maintenance program.
15. 121.1113 · Fuel tank system maintenance program.
16. 121.1115 · Limit of validity.
17. 121.1117 · Flammability reduction means.
18. 121.1119 · Fuel tank vent explosion protection.
19. 121.113 · Area and route requirements: General.
20. 121.115 · Route width.
21. 121.117 · Airports: Required data.
22. 121.119 · Weather reporting facilities.
23. 121.1200-121.1399 · -121.1399 [Reserved]
24. 121.121 · En route navigation facilities.
25. 121.122 · Communications facilities—supplemental operations.
26. 121.123 · Servicing maintenance facilities.
27. 121.125 · Flight following system.
28. 121.127 · Flight following system; requirements.
29. 121.131 · Applicability.
30. 121.133 · Preparation.
31. 121.135 · Manual contents.
32. 121.137 · Distribution and availability.
33. 121.139 · Manual accessibility: Supplemental operations.
34. 121.1400-121.1499 · -121.1499 [Reserved]
35. 121.141 · Airplane flight manual.
36. 121.15 · Carriage of narcotic drugs, marihuana, and depressant or stimulant drugs or substances.
37. 121.1500 · SFAR No. 111—Lavatory Oxygen Systems.
38. 121.151 · Applicability.
39. 121.153 · Aircraft requirements: General.
40. 121.155 · [Reserved]
41. 121.157 · Aircraft certification and equipment requirements.
42. 121.159 · Single-engine airplanes prohibited.
43. 121.161 · Airplane limitations: Type of route.
44. 121.162 · ETOPS Type Design Approval Basis.
45. 121.163 · Aircraft proving tests.
46. 121.171 · Applicability.
47. 121.173 · General.
48. 121.175 · Airplanes: Reciprocating engine-powered: Weight limitations.
49. 121.177 · Airplanes: Reciprocating engine-powered: Takeoff limitations.
50. 121.179 · Airplanes: Reciprocating engine-powered: En route limitations: All engines operating.
51. 121.181 · Airplanes: Reciprocating engine-powered: En route limitations: One engine inoperative.
52. 121.183 · Part 25 airplanes with four or more engines: Reciprocating engine powered: En route limitations: Two engines inoperative.
53. 121.185 · Airplanes: Reciprocating engine-powered: Landing limitations: Destination airport.
54. 121.187 · Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport.
55. 121.189 · Airplanes: Turbine engine powered: Takeoff limitations.
56. 121.191 · Airplanes: Turbine engine powered: En route limitations: One engine inoperative.
57. 121.193 · Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.
58. 121.195 · Airplanes: Turbine engine powered: Landing limitations: Destination airports.
59. 121.197 · Airplanes: Turbine engine powered: Landing limitations: Alternate airports.
60. 121.198 · Cargo service airplanes: Increased zero fuel and landing weights.
61. 121.199 · Nontransport category airplanes: Takeoff limitations.
62. 121.2 · Compliance schedule for operators that transition to part 121; certain new entrant operators.
63. 121.201 · Nontransport category airplanes: En route limitations: One engine inoperative.
64. 121.203 · Nontransport category airplanes: Landing limitations: Destination airport.
65. 121.205 · Nontransport category airplanes: Landing limitations: Alternate airport.
66. 121.207 · Provisionally certificated airplanes: Operating limitations.
67. 121.211 · Applicability.
68. 121.213 · [Reserved]
69. 121.215 · Cabin interiors.
70. 121.217 · Internal doors.
71. 121.219 · Ventilation.
72. 121.221 · Fire precautions.
73. 121.223 · Proof of compliance with § 121.221.
74. 121.225 · Propeller deicing fluid.
75. 121.227 · Pressure cross-feed arrangements.
76. 121.229 · Location of fuel tanks.
77. 121.231 · Fuel system lines and fittings.
78. 121.233 · Fuel lines and fittings in designated fire zones.
79. 121.235 · Fuel valves.
80. 121.237 · Oil lines and fittings in designated fire zones.
81. 121.239 · Oil valves.
82. 121.241 · Oil system drains.
83. 121.243 · Engine breather lines.
84. 121.245 · Fire walls.
85. 121.247 · Fire-wall construction.
86. 121.249 · Cowling.
87. 121.251 · Engine accessory section diaphragm.
88. 121.253 · Powerplant fire protection.
89. 121.255 · Flammable fluids.
90. 121.257 · Shutoff means.
91. 121.259 · Lines and fittings.
92. 121.261 · Vent and drain lines.
93. 121.263 · Fire-extinguishing systems.
94. 121.265 · Fire-extinguishing agents.
95. 121.267 · Extinguishing agent container pressure relief.
96. 121.269 · Extinguishing agent container compartment temperature.
97. 121.271 · Fire-extinguishing system materials.
98. 121.273 · Fire-detector systems.
99. 121.275 · Fire detectors.
100. 121.277 · Protection of other airplane components against fire.
101. 121.279 · Control of engine rotation.
102. 121.281 · Fuel system independence.
103. 121.283 · Induction system ice prevention.
104. 121.285 · Carriage of cargo in passenger compartments.
105. 121.287 · Carriage of cargo in cargo compartments.
106. 121.289 · Landing gear: Aural warning device.
107. 121.291 · Demonstration of emergency evacuation procedures.
108. 121.293 · Special airworthiness requirements for nontransport category airplanes type certificated after December 31, 1964.
109. 121.295 · Location for a suspect device.
110. 121.301 · Applicability.
111. 121.303 · Airplane instruments and equipment.
112. 121.305 · Flight and navigational equipment.
113. 121.306 · Portable electronic devices.
114. 121.307 · Engine instruments.
115. 121.308 · Lavatory fire protection.
116. 121.309 · Emergency equipment.
117. 121.310 · Additional emergency equipment.
118. 121.311 · Seats, safety belts, and shoulder harnesses.
119. 121.312 · Materials for compartment interiors.
120. 121.313 · Miscellaneous equipment.
121. 121.314 · Cargo and baggage compartments.
122. 121.315 · Cockpit check procedure.
123. 121.316 · Fuel tanks.
124. 121.317 · Passenger information requirements, smoking prohibitions, and additional seat belt requirements.
125. 121.318 · Public address system.
126. 121.319 · Crewmember interphone system.
127. 121.321 · Operations in icing.
128. 121.323 · Instruments and equipment for operations at night.
129. 121.325 · Instruments and equipment for operations under IFR or over-the-top.
130. 121.326 · Radio Altimeter Systems.
131. 121.327 · Supplemental oxygen: Reciprocating engine powered airplanes.
132. 121.329 · Supplemental oxygen for sustenance: Turbine engine powered airplanes.
133. 121.331 · Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered airplanes.
134. 121.333 · Supplemental oxygen for emergency descent and for first aid; turbine engine powered airplanes with pressurized cabins.
135. 121.335 · Equipment standards.
136. 121.337 · Protective breathing equipment.
137. 121.339 · Emergency equipment for extended over-water operations.
138. 121.340 · Emergency flotation means.
139. 121.341 · Equipment for operations in icing conditions.
140. 121.342 · Pitot heat indication systems.
141. 121.343 · Flight data recorders.
142. 121.344 · Digital flight data recorders for transport category airplanes.
143. 121.344a · Digital flight data recorders for 10-19 seat airplanes.
144. 121.345 · Radio equipment.
145. 121.346 · Flight data recorders: filtered data.
146. 121.347 · Communication and navigation equipment for operations under VFR over routes navigated by pilotage.
147. 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.
148. 121.351 · Communication and navigation equipment for extended over-water operations and for certain other operations.
149. 121.353 · Emergency equipment for operations over uninhabited terrain areas: Flag, supplemental, and certain domestic operations.
150. 121.354 · Terrain awareness and warning system.
151. 121.355 · Equipment for operations on which specialized means of navigation are used.
152. 121.356 · Collision avoidance system.
153. 121.357 · Airborne weather radar equipment requirements.
154. 121.358 · Low-altitude windshear system equipment requirements.
155. 121.359 · Cockpit voice recorders.
156. 121.360 · [Reserved]
157. 121.361 · Applicability.
158. 121.363 · Responsibility for airworthiness.
159. 121.365 · Maintenance, preventive maintenance, and alteration organization.
160. 121.367 · Maintenance, preventive maintenance, and alterations programs.
161. 121.368 · Contract maintenance.
162. 121.369 · Manual requirements.
163. 121.370-121.370a · -121.370a [Reserved]
164. 121.371 · Required inspection personnel.
165. 121.373 · Continuing analysis and surveillance.
166. 121.374 · Continuous airworthiness maintenance program (CAMP) for two-engine ETOPS.
167. 121.375 · Maintenance and preventive maintenance training program.
168. 121.377 · Maintenance and preventive maintenance personnel duty time limitations.
169. 121.378 · Certificate requirements.
170. 121.379 · Authority to perform and approve maintenance, preventive maintenance, and alterations.
171. 121.380 · Maintenance recording requirements.
172. 121.380a · Transfer of maintenance records.
173. 121.381 · Applicability.
174. 121.383 · Airman: Limitations on use of services.
175. 121.385 · Composition of flight crew.
176. 121.387 · Flight engineer.
177. 121.389 · Flight navigator and specialized navigation equipment.
178. 121.391 · Flight attendants.
179. 121.392 · Personnel identified as flight attendants.
180. 121.393 · Crewmember requirements at stops where passengers remain on board.
181. 121.394 · Flight attendant requirements during passenger boarding and deplaning.
182. 121.395 · Aircraft dispatcher: Domestic and flag operations.
183. 121.397 · Emergency and emergency evacuation duties.
184. 121.4 · Applicability of rules to unauthorized operators.
185. 121.400 · Applicability and terms used.
186. 121.401 · Training program: General.
187. 121.402 · Training program: Special rules.
188. 121.403 · Training program: Curriculum.
189. 121.404 · Crew and dispatcher resource management training.
190. 121.405 · Training program and revision: Initial and final approval.
191. 121.406 · Credit for previous CRM/DRM training.
192. 121.407 · Training program: Approval of flight simulation training devices.
193. 121.408 · Training equipment other than flight simulation training devices.
194. 121.409 · Training courses using flight simulation training devices.
195. 121.410 · Airline transport pilot certification training program.
196. 121.411 · Qualifications: Check pilots and check flight engineers.
197. 121.412 · Qualifications: Flight instructors.
198. 121.413 · Initial, transition and recurrent training and checking requirements: Check pilots and check flight engineers.
199. 121.414 · Initial, transition and recurrent training and checking requirements: Flight instructors.
200. 121.415 · Crewmember and dispatcher training program requirements.
201. 121.417 · Crewmember emergency training.
202. 121.418 · Differences training and related aircraft differences training.
203. 121.419 · Pilots and flight engineers: Initial, transition, conversion and upgrade ground training.
204. 121.420 · Pilots: Upgrade ground training.
205. 121.421 · Flight attendants: Initial and transition ground training.
206. 121.422 · Aircraft dispatchers: Initial and transition ground training.
207. 121.423 · Pilots: Extended Envelope Training.
208. 121.424 · Pilots: Initial, transition, conversion, and upgrade flight training.
209. 121.425 · Flight engineers: Initial and transition flight training.
210. 121.426 · Pilots: Upgrade flight training.
211. 121.427 · Recurrent training.
212. 121.429 · Pilots in command: Leadership and command and mentoring training.
213. 121.431 · Applicability.
214. 121.432 · General.
215. 121.433 · Training required.
216. 121.434 · Operating experience, operating cycles, and consolidation of knowledge and skills.
217. 121.435 · Pilots: Operations Familiarization.
218. 121.436 · Pilot Qualification: Certificates and experience requirements.
219. 121.438 · Pilot operating limitations and pairing requirements.
220. 121.439 · Pilot qualification: Recent experience.
221. 121.440 · Line checks.
222. 121.441 · Proficiency checks.
223. 121.443 · Pilot in command qualification: Route and airports.
224. 121.445 · Pilot in command airport qualification: Special areas and airports.
225. 121.447 · [Reserved]
226. 121.453 · Flight engineer qualifications.
227. 121.455-121.459 · -121.459 [Reserved]
228. 121.461 · Applicability.
229. 121.463 · Aircraft dispatcher qualifications.
230. 121.465 · Aircraft dispatcher duty time limitations: Domestic and flag operations.
231. 121.467 · Flight attendant duty period limitations and rest requirements: Domestic, flag, and supplemental operations.
232. 121.470 · Applicability.
233. 121.471 · Flight time limitations and rest requirements: All flight crewmembers.
234. 121.473 · Fatigue risk management system.
235. 121.480 · Applicability.
236. 121.481 · Flight time limitations: One or two pilot crews.
237. 121.483 · Flight time limitations: Two pilots and one additional flight crewmember.
238. 121.485 · Flight time limitations: Three or more pilots and an additional flight crewmember.
239. 121.487 · Flight time limitations: Pilots not regularly assigned.
240. 121.489 · Flight time limitations: Other commercial flying.
241. 121.491 · Flight time limitations: Deadhead transportation.
242. 121.493 · Flight time limitations: Flight engineers and flight navigators.
243. 121.495 · Fatigue risk management system.
244. 121.500 · Applicability.
245. 121.503 · Flight time limitations: Pilots: airplanes.
246. 121.505 · Flight time limitations: Two pilot crews: airplanes.
247. 121.507 · Flight time limitations: Three pilot crews: airplanes.
248. 121.509 · Flight time limitations: Four pilot crews: airplanes.
249. 121.511 · Flight time limitations: Flight engineers: airplanes.
250. 121.513 · Flight time limitations: Overseas and international operations: airplanes.
251. 121.515 · Flight time limitations: All airmen: airplanes.
252. 121.517 · Flight time limitations: Other commercial flying: airplanes.
253. 121.519 · Flight time limitations: Deadhead transportation: airplanes.
254. 121.521 · Flight time limitations: Crew of two pilots and one additional airman as required.
255. 121.523 · Flight time limitations: Crew of three or more pilots and additional airmen as required.
256. 121.525 · Flight time limitations: Pilots serving in more than one kind of flight crew.
257. 121.527 · Fatigue risk management system.
258. 121.531 · Applicability.
259. 121.533 · Responsibility for operational control: Domestic operations.
260. 121.535 · Responsibility for operational control: Flag operations.
261. 121.537 · Responsibility for operational control: Supplemental operations.
262. 121.538 · Aircraft security.
263. 121.539 · Operations notices.
264. 121.541 · Operations schedules: Domestic and flag operations.
265. 121.542 · Flight crewmember duties.
266. 121.543 · Flight crewmembers at controls.
267. 121.544 · Pilot monitoring.
268. 121.545 · Manipulation of controls.
269. 121.547 · Admission to flight deck.
270. 121.548 · Aviation safety inspector's credentials: Admission to pilot's compartment.
271. 121.548a · DOD Commercial Air Carrier Evaluator's Credential.
272. 121.549 · Flying equipment.
273. 121.550 · Secret Service Agents: Admission to flight deck.
274. 121.551 · Restriction or suspension of operation: Domestic and flag operations.
275. 121.553 · Restriction or suspension of operation: Supplemental operations.
276. 121.555 · Compliance with approved routes and limitations: Domestic and flag operations.
277. 121.557 · Emergencies: Domestic and flag operations.
278. 121.559 · Emergencies: Supplemental operations.
279. 121.561 · Reporting potentially hazardous meteorological conditions and irregularities of ground facilities or navigation aids.
280. 121.563 · Reporting mechanical irregularities.
281. 121.565 · Engine inoperative: Landing; reporting.
282. 121.567 · Instrument approach procedures and IFR landing minimums.
283. 121.569 · Equipment interchange: Domestic and flag operations.
284. 121.570 · Airplane evacuation capability.
285. 121.571 · Briefing passengers before takeoff.
286. 121.573 · Briefing passengers: Extended overwater operations.
287. 121.574 · Oxygen and portable oxygen concentrators for medical use by passengers.
288. 121.575 · Alcoholic beverages.
289. 121.576 · Retention of items of mass in passenger and crew compartments.
290. 121.577 · Stowage of food, beverage, and passenger service equipment during airplane movement on the surface, takeoff, and landing.
291. 121.578 · Cabin ozone concentration.
292. 121.579 · Minimum altitudes for use of autopilot.
293. 121.580 · Prohibition on interference with crewmembers.
294. 121.581 · Observer's seat: En route inspections.
295. 121.582 · Means to discreetly notify a flightcrew.
296. 121.583 · Carriage of persons without compliance with the passenger-carrying requirements of this part.
297. 121.584 · Requirement to view the area outside the flightdeck door.
298. 121.585 · Exit seating.
299. 121.586 · Authority to refuse transportation.
300. 121.587 · Closing and locking of flightcrew compartment door.
301. 121.589 · Carry-on baggage.
302. 121.590 · Use of certificated land airports in the United States.
303. 121.591 · Applicability.
304. 121.593 · Dispatching authority: Domestic operations.
305. 121.595 · Dispatching authority: Flag operations.
306. 121.597 · Flight release authority: Supplemental operations.
307. 121.599 · Familiarity with weather conditions.
308. 121.601 · Aircraft dispatcher information to pilot in command: Domestic and flag operations.
309. 121.603 · Facilities and services: Supplemental operations.
310. 121.605 · Airplane equipment.
311. 121.607 · Communication and navigation facilities: Domestic and flag operations.
312. 121.609 · Communication and navigation facilities: Supplemental operations.
313. 121.611 · Dispatch or flight release under VFR.
314. 121.613 · Dispatch or flight release under IFR or over the top.
315. 121.615 · Dispatch or flight release over water: Flag and supplemental operations.
316. 121.617 · Alternate airport for departure.
317. 121.619 · Alternate airport for destination: IFR or over-the-top: Domestic operations.
318. 121.621 · Alternate airport for destination: Flag operations.
319. 121.623 · Alternate airport for destination: IFR or over-the-top: Supplemental operations.
320. 121.624 · ETOPS Alternate Airports.
321. 121.625 · Alternate Airport weather minima.
322. 121.627 · Continuing flight in unsafe conditions.
323. 121.628 · Inoperable instruments and equipment.
324. 121.629 · Operation in icing conditions.
325. 121.631 · Original dispatch or flight release, redispatch or amendment of dispatch or flight release.
326. 121.633 · Considering time-limited systems in planning ETOPS alternates.
327. 121.635 · Dispatch to and from refueling or provisional airports: Domestic and flag operations.
328. 121.637 · Takeoffs from unlisted and alternate airports: Domestic and flag operations.
329. 121.639 · Fuel supply: All domestic operations.
330. 121.7 · Definitions.
331. 121.9 · [Reserved]
332. 121.91 · Applicability.
333. 121.93 · Route requirements: General.
334. 121.95 · Route width.
335. 121.97 · Airports: Required data.
336. 121.99 · Communications facilities—domestic and flag operations.