Which entity approves a progressive inspection schedule?

• A. ICAO.
• B. FAA FSDO.
• C. The operator.
• D. The shipper.

Answer: (B)

Progressive inspection schedules are formal maintenance programs that must be reviewed and approved by the FAA, specifically through the Flight Standards District Office (FSDO). Before an aircraft can use a staggered set of inspections in place of standard checks, the operator submits the proposed schedule to the local FSDO, which evaluates the tasks, intervals, and recordkeeping to ensure they meet regulatory requirements and maintain airworthiness. Once approved, the schedule becomes part of the operator’s approved maintenance program.

ICAO sets international standards, but it does not grant or approve a U.S. operator’s maintenance schedules. The operator can implement and carry out the plan only after FAA approval. The shipper isn’t involved in maintenance approvals and has no role in certifying airworthiness.