Which item is not part of the minimum required write-up information on AFTO form 781A?

• A. Aircraft serial
• B. Name
• C. Date
• D. Discrepancy

Answer: (A)

The write-up on AFTO Form 781A is meant to record the issue and who/when it was reported, not to repeat the aircraft’s identifying data. You need the date to establish when the discrepancy was observed, and the name (or initials) to identify who entered or reported the information. The discrepancy field itself captures the actual fault or symptom. The aircraft serial number is already handled in the form header and isn’t part of the minimum write-up narrative. So the item that isn’t part of the minimum required write-up information is the aircraft serial.