What form is used to record a mechanical discrepancy?

• A. Form 87-100
• B. Form 1070
• C. Form 86-100
• D. Form 91-100

Answer: (C)

Recording a mechanical discrepancy requires a standardized form so maintenance can track, investigate, and correct faults. The form designated for this purpose provides a clear record of what was found, where, and what needs to be done. It typically includes aircraft identification, date and time, location of the issue, a concise description of the discrepancy, systems or components involved, relevant flight or maintenance data, and the recommended corrective action or disposition. This creates an auditable trail for maintenance control and flight operations, supports scheduling of repairs, and ensures the aircraft can be released safe for flight only after the discrepancy is addressed. The form used for this purpose is Form 86-100. Other forms exist for routine maintenance orders or pilot reports, but they do not substitute for documenting mechanical discrepancies in a standardized manner.