Part 121 (FAR)

Part 121 of the Federal Aviation Regulations (FAR) governs the operation of large commercial aircraft by airlines and air carriers in the United States. It sets safety and operational standards for flight crew training, aircraft maintenance, recordkeeping, and operational procedures. This ensures consistent safety, reliability, and quality in transporting passengers and cargo. Essentially, Part 121 creates a regulatory framework that airline operators must follow to maintain high safety standards and compliance with federal laws, helping to protect both passengers and crew during commercial flights.