AC 43-12A, ADVISORY CIRCULAR: PREVENTIVE MAINTENANCE (10 OCT 1983)

AC 43-12A, ADVISORY CIRCULAR: PREVENTIVE MAINTENANCE (10 OCT 1983)., This advisory circular (AC) provides information concerning preventive maintenance, who may perform it, the standards of performance applicable to it, authority for approving aircraft for return to service, and the applicable recording requirements. This AC also clarifies those areas most frequently misunderstood in the past, and explains the recent changes in the rules concerning preventive maintenance.