Airworthiness Directive · Amendment 39-19253 · Engine
DG Flugzeugbau GmbH Gliders
This AD applies to DG Flugzeugbau GmbH DG-500MB and DG-1000M gliders, all serial numbers, certificated in any category, that are:
(1) Equipped with a Solo 2625 02 engine modified with a fuel injection system following the instructions of Solo Kleinmotoren GmbH Technische Mitteilung Nr. (English translation: Service Bulletin No.) 4600-3 and identified as Solo 2625 02i; or
(2) equipped with a Solo 2625 02i engine at manufacture.
We are superseding Airworthiness Directive (AD) 2017-08-09 for DG Flugzeugbau GmbH Model DG-500MB gliders that are equipped with a Solo 2625 02 engine modified with a fuel injection system following the instructions of Solo Kleinmotoren GmbH Technische Mitteilung Nr. 4600-3 and identified as Solo 2625 02i. This 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 the potential of an in-flight shut-down and engine fire due to failure of the connecting stud for the two fuel injector mounts of the engine redundancy system on gliders equipped with a Solo 2625 02i engine. We are issuing this AD to add a model to the applicability and require actions to address the unsafe condition on these products.
Unless already done, do the following actions in paragraphs (f)(1) through (3) of this AD following Solo Kleinmotoren GmbH Technische Mitteilung Nr. (English translation: Service Bulletin No.), 4600-5, Ausgabe 2 (English translation: Issue 2), dated December 12, 2014.
(1) For Model DG-500MB gliders: Within the next 60 days after May 26, 2017 (the effective date of AD 2017-08-09), modify the engine redundancy system.
(2) For Model DG-1000M gliders: Within the next 60 days after May 25, 2018 (the effective date of this AD), modify the engine redundancy system.
(3) For all gliders: The Note in Solo Kleinmotoren GmbH Technische Mitteilung (English translation: Service Bulletin), Nr. 4600-5, Ausgabe 2 (English translation: Issue 2), dated December 12, 2014, stating “the actions have to be accomplished by a certified maintenance organization and must be released by certifying staff,” is not applicable to this AD.
Note 1 to paragraph (f) of this AD: This service information contains German to English translation. The EASA used the English translation in referencing the document. For enforceability purposes, we will refer to the Solo Kleinmotoren service information as it appears on the document.
This AD allows credit for modification of the engine redundancy system as required in paragraph (f)(1) of this AD if done before May 26, 2017 (the effective date of AD 2017-08-09) and allows credit for modification of the engine redundancy system as required in paragraph (f)(2) of this AD if done before May 25, 2018 (the effective date of this AD) following Solo Kleinmotoren GmbH Technische Mitteilung (English translation: Service Bulletin), Nr. 4600-5, Ausgabe 1 (English translation: Issue 1), dated November 24, 2014.
