# Proposed AD 2004-CE-06-AD: DG Flugzeugbau GmbH, Model DG-500MB Sailplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-18-12
- Products: DG Flugzeugbau
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 20, 2004, 69 FR 29106
- Comments due: July 9, 2004
- Became: [AD 2004-18-12](https://openairdocs.org/ad/2004-18-12)
- Docket: 2004-CE-06-AD
- FR document: 04-11371
- Official PDF: https://openairdocs.org/files/sha256/e0/ab/e0ab6e47064fec66b46c4567f347cd1dc78ffcf5c2fbee62c8dc1195a9d711a3 (from https://www.govinfo.gov/content/pkg/FR-2004-05-20/pdf/04-11371.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/05/20/04-11371/airworthiness-directives-dg-flugzeugbau-gmbh-model-dg-500mb-sailplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B1BE16BA92275F086256E9A00505F91.0001
- Page: https://openairdocs.org/proposed/2004-CE-06-AD

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain DG Flugzeugbau GmbH, Model DG-500MB sailplanes. This proposed AD would require 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 proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. We are issuing this proposed AD to prevent failure of the Warner LA10 spindle drive, which could result in the engine pylon not rising or lowering. This condition could cause an unstable engine pylon assembly during flight with loss of control of the sailplane.

## Notices in this docket

- May 20, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-11371, comments due Jul 9, 2004 (https://www.federalregister.gov/documents/2004/05/20/04-11371/airworthiness-directives-dg-flugzeugbau-gmbh-model-dg-500mb-sailplanes)

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