Who enters their signature in Block 12 for servicing certification?

• A. The pilot
• B. The mechanic
• C. The individual performing or supervising the servicing
• D. The flight operations manager

Answer: (C)

In Block 12 of the AFTO Form 781, it is critical to have the signature of the individual who is performing or supervising the servicing. This is because this block is used to certify that maintenance actions—such as servicing—were carried out according to the applicable maintenance standards, ensuring safety and compliance with regulations.

The individual performing or supervising the servicing holds the responsibility for ensuring that all actions taken during servicing meet regulatory and operational guidelines. Having their signature serves as verification that the technical and procedural requirements have been followed, and it establishes accountability for the work completed.

The other roles mentioned, such as the pilot or flight operations manager, do not directly perform or supervise the servicing. The mechanic might be involved in certain maintenance tasks but may not be the one certifying servicing specifically in that block unless they are overseeing it. Thus, the emphasis on the supervising individual underscores the importance of proper oversight in maintenance actions, which is essential in aviation safety.