Airworthiness Directive · Amendment 39-17644 · Engine starting
DG Flugzeugbau GmbH Gliders
This AD applies to DG Flugzeugbau GmbH DG-800A, DG-800B, and DG-500MB gliders, all serial numbers, certificated in any category.
We are adopting a new airworthiness directive (AD) for all DG Flugzeugbau GmbH Models DG-800A, DG-800B, DG-500MB gliders. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as a defective starter motor control unit, which could activate the starter motor without pressing the starter button. We are issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, do the actions in paragraphs (f)(1) and (f)(2) of this AD:
(1) Within 10 days after November 18, 2013 (the effective date of this AD), inspect to determine if an unmodified starter control unit is installed. If an unmodified starter control unit is installed, remove the unit and replace it with a modified unit. Do the removal and replacement following the Instructions section of DG Flugzeugbau GmbH Technical note No. 800/42, 500/06 (co-published as one document), dated May 29, 2013.
(2) As of November 18, 2013 (the effective date of this AD), do not install any starter motor control unit unless it has been modified and labeled with placard “MS.”
