How many signatures are required on the A-sheet?

The requirement for three signatures on the A-sheet is tied to the need for accountability and verification in the aircraft maintenance process. Each signature represents a critical step in the pre-flight inspection and maintenance verification process, ensuring that multiple qualified personnel have reviewed and approved the status of the aircraft before it is released for flight.

The first signature typically comes from the Plane Captain, who is responsible for the overall condition of the aircraft. The second is from an Individual Qualified to Perform Maintenance (IQPM), confirming that the maintenance performed was completed correctly and adhering to standards. The third signature is usually from a Maintenance Control or Quality Assurance representative, who ensures that the aircraft is in a safe condition for flight and that all documentation is accurate.

This structured approach ensures a thorough review process, enhancing flight safety by preventing oversights and ensuring all maintenance actions are documented and validated by multiple sources. The requirement of three signatures reinforces the importance of teamwork and regulatory compliance in aviation maintenance, ensuring that the aircraft is maintained to the highest standards.