AD 95-12-23 60 FR 31241

This amendment adopts a new airworthiness directive (AD) that applies to certain Twin Commander Aircraft Corporation (Twin Commander) Models 690C and 695 airplanes. This action requires initially inspecting the wing structure for cracks, modifying any cracked wing structure, and, if not cracked, either repetitively inspecting or modifying the wing structure. Results of full-scale fatigue testing that indicated areas in the wing that are subject to fatigue cracks prompted this action. The actions specified by this AD are intended to prevent wing damage caused by fatigue cracking, which, if not detected and corrected, could progress to the point of structural failure.