Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Diamond Aircraft Industries (Diamond) Models HK 36 TTS and HK 36 TTC sailplanes. The proposed action would require inspecting the engine turbocharger oil-pressure line for the correct banjo bolt. The correct banjo bolt would have a valve seat, instead of a built-in orifice. If the banjo bolt does not have a valve seat, then the proposed action would require replacing the banjo bolt with one that has a valve seat, and repairing or replacing the turbocharger. The proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Austria. The actions specified by the proposed AD are intended to prevent possible loss of engine power, which, if not corrected, could result in possible loss of control of the sailplane.