Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to all Burkhart GROB Luft-und Raumfahrt GmbH (Grob) Model G 109B gliders. The proposed AD would require inspecting the engine mounting frame for paint scratches and damage (abrasions, notches, or chafing); and repairing any paint scratches, and repairing or replacing any engine mounting frame that is found damaged. The proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. The actions specified by the proposed AD are intended to detect and correct damage to the engine mounting frame, which could result in failure of the engine mount structure with consequent loss of the engine.