Federal Aviation Administration, DOT

Pt. 121
121.553 Restriction or suspension of operation: Supplemental operations.
121.555 Compliance with approved routes
and limitations: Domestic and flag operations.
121.557 Emergencies: Domestic and flag operations.
121.559 Emergencies: Supplemental operations.
121.561 Reporting potentially hazardous meteorological conditions and irregularities
of ground facilities or navigation aids.
121.563 Reporting mechanical irregularities.
121.565 Engine inoperative: Landing; reporting.
121.567 Instrument approach procedures and
IFR landing minimums.
121.569 Equipment interchange: Domestic
and flag operations.
121.570 Airplane evacuation capability.
121.571 Briefing passengers before takeoff.
121.573 Briefing
passengers:
Extended
overwater operations.
121.574 Oxygen and portable oxygen concentrators for medical use by passengers.
121.575 Alcoholic beverages.
121.576 Retention of items of mass in passenger and crew compartments.
121.577 Stowage of food, beverage, and passenger service equipment during airplane
movement on the surface, takeoff, and
landing.
121.578 Cabin ozone concentration.
121.579 Minimum altitudes for use of autopilot.
121.580 Prohibition on interference with
crewmembers.
121.581 Observer-s seat: En route inspections.
121.582 Means
to
discreetly
notify
a
flightcrew.
121.583 Carriage of persons without compliance with the passenger-carrying requirements of this part.
121.584 Requirement to view the area outside the flightdeck door.
121.585 Exit seating.
121.586 Authority to refuse transportation.
121.587 Closing and locking of flight crew
compartment door.
121.589 Carry-on baggage.
121.590 Use of certificated land airports in
the United States.

121.489 Flight time limitations: Other commercial flying.
121.491 Flight time limitations: Deadhead
transportation.
121.493 Flight time limitations: Flight engineers and flight navigators.
121.495 Fatigue risk management system.

Subpart S - Flight Time Limitations:
Supplemental Operations
121.500 Applicability.
121.503 Flight time limitations: Pilots: airplanes.
121.505 Flight time limitations: Two pilot
crews: airplanes.
121.507 Flight time limitations: Three pilot
crews: airplanes.
121.509 Flight time limitations: Four pilot
crews: airplanes.
121.511 Flight time limitations: Flight engineers: airplanes.
121.513 Flight time limitations: Overseas
and international operations: airplanes.
121.515 Flight time limitations: All airmen:
airplanes.
121.517 Flight time limitations: Other commercial flying: airplanes.
121.519 Flight time limitations: Deadhead
transportation: airplanes.
121.521 Flight time limitations: Crew of two
pilots and one additional airman as required.
121.523 Flight time limitations: Crew of
three or more pilots and additional airmen as required.
121.525 Flight time limitations: Pilots serving in more than one kind of flight crew.
121.527 Fatigue risk management system.

Subpart T - Flight Operations
121.531 Applicability.
121.533 Responsibility for operational control: Domestic operations.
121.535 Responsibility for operational control: Flag operations.
121.537 Responsibility for operational control: Supplemental operations.
121.538 Aircraft security.
121.539 Operations notices.
121.541 Operations schedules: Domestic and
flag operations.
121.542 Flight crewmember duties.
121.543 Flight crewmembers at controls.
121.544 Pilot monitoring.
121.545 Manipulation of controls.
121.547 Admission to flight deck.
121.548 Aviation safety inspector-s credentials: Admission to pilot-s compartment.
121.548a DOD Commercial Air Carrier Evaluator-s Credential.
121.549 Flying equipment.
121.550 Secret Service Agents: Admission to
flight deck.
121.551 Restriction or suspension of operation: Domestic and flag operations.

Subpart U - Dispatching and Flight Release
Rules
121.591 Applicability.
121.593 Dispatching authority: Domestic operations.
121.595 Dispatching authority: Flag operations.
121.597 Flight release authority: Supplemental operations.
121.599 Familiarity with weather conditions.

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