What is a key consideration when signing off a progressive inspection segment?

What is a key consideration when signing off a progressive inspection segment?

• A. Sign off after the first two checks only.
• B. Ensure the segment has been completed per approved data and that all safety-critical checks in that segment are satisfied.
• C. Sign off based on time-in-service rather than work performed.
• D. Allow sub-teams to skip some checks if all personnel are present.

Answer: (B)

Signing off a progressive inspection segment means the work in that segment must be completed exactly as specified in the approved data, and every safety-critical check within that segment must be verified as satisfactory before the sign-off. This ensures that the aircraft remains airworthy and compliant while the progressive inspection is ongoing. Approved data includes the maintenance manual, service bulletins, applicable airworthiness directives, and the specific progressive inspection plan—so every task and check is performed to the approved standard. Safety-critical checks are the items that directly affect flight safety and reliability; they must be completed and proven satisfactory because any omission could compromise airworthiness. Signing off after only part of the checks, signing off based on time in service rather than the actual work performed, or allowing sub-teams to skip checks would bypass essential verification and is not allowed.

Signing off a progressive inspection segment means the work in that segment must be completed exactly as specified in the approved data, and every safety-critical check within that segment must be verified as satisfactory before the sign-off. This ensures that the aircraft remains airworthy and compliant while the progressive inspection is ongoing. Approved data includes the maintenance manual, service bulletins, applicable airworthiness directives, and the specific progressive inspection plan—so every task and check is performed to the approved standard. Safety-critical checks are the items that directly affect flight safety and reliability; they must be completed and proven satisfactory because any omission could compromise airworthiness. Signing off after only part of the checks, signing off based on time in service rather than the actual work performed, or allowing sub-teams to skip checks would bypass essential verification and is not allowed.