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Title 14

Displaying title 14, up to date as of 7/14/2026. Title 14 was last amended 7/06/2026.
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Title 14Aeronautics and SpacePart / Section
Chapter IFederal Aviation Administration, Department of Transportation1 – 199
Subchapter GAir Carriers and Operators for Compensation or Hire: Certification and Operations110 – 139
Part 121Operating Requirements: Domestic, Flag, and Supplemental Operations121.1 – 121.1500
Subpart TFlight Operations121.531 – 121.590
§ 121.531Applicability.
§ 121.533Responsibility for operational control: Domestic operations.
§ 121.535Responsibility for operational control: Flag operations.
§ 121.537Responsibility for operational control: Supplemental operations.
§ 121.538Aircraft security.
§ 121.539Operations notices.
§ 121.541Operations schedules: Domestic and flag operations.
§ 121.542Flight crewmember duties.
§ 121.543Flight crewmembers at controls.
§ 121.544Pilot monitoring.
§ 121.545Manipulation of controls.
§ 121.547Admission to flight deck.
§ 121.548Aviation safety inspector's credentials: Admission to pilot's compartment.
§ 121.548aDOD Commercial Air Carrier Evaluator's Credential.
§ 121.549Flying equipment.
§ 121.550Secret Service Agents: Admission to flight deck.
§ 121.551Restriction or suspension of operation: Domestic and flag operations.
§ 121.553Restriction or suspension of operation: Supplemental operations.
§ 121.555Compliance with approved routes and limitations: Domestic and flag operations.
§ 121.557Emergencies: Domestic and flag operations.
§ 121.559Emergencies: Supplemental operations.
§ 121.561Reporting potentially hazardous meteorological conditions and irregularities of ground facilities or navigation aids.
§ 121.563Reporting mechanical irregularities.
§ 121.565Engine inoperative: Landing; reporting.
§ 121.567Instrument approach procedures and IFR landing minimums.
§ 121.569Equipment interchange: Domestic and flag operations.
§ 121.570Airplane evacuation capability.
§ 121.571Briefing passengers before takeoff.
§ 121.573Briefing passengers: Extended overwater operations.
§ 121.574Oxygen and portable oxygen concentrators for medical use by passengers.
§ 121.575Alcoholic beverages.
§ 121.576Retention of items of mass in passenger and crew compartments.
§ 121.577Stowage of food, beverage, and passenger service equipment during airplane movement on the surface, takeoff, and landing.
§ 121.578Cabin ozone concentration.
§ 121.579Minimum altitudes for use of autopilot.
§ 121.580Prohibition on interference with crewmembers.
§ 121.581Observer's seat: En route inspections.
§ 121.582Means to discreetly notify a flightcrew.
§ 121.583Carriage of persons without compliance with the passenger-carrying requirements of this part.
§ 121.584Requirement to view the area outside the flightdeck door.
§ 121.585Exit seating.
§ 121.586Authority to refuse transportation.
§ 121.587Closing and locking of flightcrew compartment door.
§ 121.589Carry-on baggage.
§ 121.590Use of certificated land airports in the United States.