Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Aerospace Technologies of Australia (ASTA) Nomad Models N22B, N22S, and N24A airplanes. The proposed action would require repetitively inspecting the tailplane stabilizer center section and repairing any cracked tailplane structure. This proposal also provides an optional modification as a terminating action, after an inspection in which no cracks are found. A tailplane failure on one of the affected airplanes prompted the proposed action. The actions specified by the proposed AD are intended to prevent cracking in the stabilizer center section, which, if not detected and corrected, could result in tailplane failure and loss of control of the airplane.