# Proposed AD FAA-2021-0792: DG Flugzeugbau GmbH Gliders

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-24-19
- Products: DG Flugzeugbau
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 17, 2021, 86 FR 51838
- Comments due: November 1, 2021
- Became: [AD 2021-24-19](https://openairdocs.org/ad/2021-24-19)
- Docket: FAA-2021-0792 (https://www.regulations.gov/docket/FAA-2021-0792, where comments are filed)
- Project: AD-2020-00593-G
- FR document: 2021-20034
- Official PDF: https://openairdocs.org/files/sha256/ac/46/ac463f5d6c1b435407070f5d9e2fc05dcd939568b64c991e711ee566a54e7533 (from https://www.govinfo.gov/content/pkg/FR-2021-09-17/pdf/2021-20034.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/09/17/2021-20034/airworthiness-directives-dg-flugzeugbau-gmbh-gliders
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B7613A26A9AC0B3862587530080FF9D.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0792

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all DG Flugzeugbau GmbH Models DG-500MB and DG-1000M gliders with a Solo Kleinmotoren GmbH Solo Model 2625 02i engine installed. This proposed AD was prompted by 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 an error in the engine control unit (ECU) software. This proposed AD would require updating the ECU software. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 17, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-20034, comments due Nov 1, 2021 (https://www.federalregister.gov/documents/2021/09/17/2021-20034/airworthiness-directives-dg-flugzeugbau-gmbh-gliders)

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