Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Air Tractor, Inc. (Air Tractor) Models AT-802 and AT-802A airplanes. The proposed action would require revising the Airworthiness Limitations section of the applicable maintenance manual to change the life limit of the tail landing gear spring. Results from a routine analysis of the life-limited parts of the affected airplanes prompted the proposed AD. In particular, the tail landing gear spring life limit is not consistent with that called out for the main landing gear spring. The actions specified by the proposed AD are intended to prevent fatigue failure of a tail landing gear spring before the life limit of the part is achieved, which could result in loss of control of the airplane.