Airworthiness Directives; Fiberglas-Technik Rudolf Lindner GmbH & Co. KG Gliders

We propose to adopt a new airworthiness directive (AD) for Fiberglas-Technik Rudolf Lindner GmbH & Co. KG Model G103 TWIN ASTIR, G103 TWIN II, and G103A TWIN II ACRO gliders. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as a broken bell-crank installed in the air brake control system. We are issuing this proposed AD to require actions to address the unsafe condition on these products.