What governs domestic air carrier operations?

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What governs domestic air carrier operations?

Domestic air carrier operations are governed by 14 CFR Part 121. This regulation sets the certification framework and operating rules for large airline and cargo carriers, including requirements for an air carrier certificate and operations specifications, crew qualifications and training, flight time and rest provisions, dispatch procedures, and maintenance programs along with overall safety management for scheduled service within the United States and to international destinations. Part 135 applies to smaller on‑demand or commuter operations with different rules, Part 91 covers general aviation and unscheduled operations, and Part 43 deals with maintenance standards and records rather than the overarching operations rules.

Domestic air carrier operations are governed by 14 CFR Part 121. This regulation sets the certification framework and operating rules for large airline and cargo carriers, including requirements for an air carrier certificate and operations specifications, crew qualifications and training, flight time and rest provisions, dispatch procedures, and maintenance programs along with overall safety management for scheduled service within the United States and to international destinations. Part 135 applies to smaller on‑demand or commuter operations with different rules, Part 91 covers general aviation and unscheduled operations, and Part 43 deals with maintenance standards and records rather than the overarching operations rules.

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