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Airworthiness Directive

AD 2004-18-12 69 FR 55321 Active

Federal Aviation Administration · 14 CFR part 39

Requires you to replace the engine pylon extension/retraction Warner LA10 spindle drive with an improved designed Stross BSA 10 spindle drive and to modify the electrical system following applicable service information.

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FR document
04-20310
Amendment
39-13790
Published
2004-09-14
Effective
2004-10-22
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/2004-18-12 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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AD

2004-18-12

FR doc 04-20310 · 69 FR 55321

AD 2004-18-12Published 2004-09-14Effective 2004-10-22

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires you to replace the engine pylon extension/retraction Warner LA10 spindle drive with an improved designed Stross BSA 10 spindle drive and to modify the electrical system following applicable service information.

Full official abstract

The FAA adopts a new airworthiness directive (AD) for certain DG Flugzeugbau GmbH Model DG-500MB sailplanes. This AD requires you to replace the engine pylon extension/retraction Warner LA10 spindle drive with an improved designed Stross BSA 10 spindle drive and to modify the electrical system following applicable service information. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. We are issuing this AD to prevent failure of the Warner LA10 spindle drive, which could result in failure of the engine pylon extension/retraction mechanism. This condition could cause an unstable engine pylon assembly during flight with loss of control of the sailplane.

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Applies to 1 model in our index