Airworthiness Directives; Alexander Schleicher Models ASW-12, ASW-15, ASW-15B, and ASW-17 Gliders

Resumen

This document proposes to supersede AD 88-11-05, which currently requires repetitively inspecting the wing spar of Alexander Schleicher Models ASW-15 and ASW-15B gliders for wood rot, and replacing any wing spar where wood rot is found. Alexander Schleicher Models ASW-12 and ASW-17 gliders are of a similar type design of the models affected by the current AD, and the Federal Aviation Administration (FAA), in working with the Civil Aviation Authority of Germany, has decided that the actions referenced in AD 88-11-05 should also apply to these glider models. The actions specified by the proposed AD are intended to prevent failure of the wing spar caused by wood rot, which, if not detected and corrected, could result in loss of control of the glider.