# Proposed AD FAA-2022-1484: Schempp-Hirth Flugzeugbau GmbH Gliders

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-03-14
- Products: Schempp-Hirth Flugzeugbau
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 22, 2022, 87 FR 71264
- Comments due: January 6, 2023
- Became: [AD 2023-03-14](https://openairdocs.org/ad/2023-03-14)
- Docket: FAA-2022-1484 (https://www.regulations.gov/docket/FAA-2022-1484, where comments are filed)
- Project: MCAI-2022-00897-G
- FR document: 2022-25367
- Official PDF: https://openairdocs.org/files/sha256/85/f3/85f3d97a23b010a7ab89bb9151d8f7064a9f4667e5c917d138301b4adc1f4a2f (from https://www.govinfo.gov/content/pkg/FR-2022-11-22/pdf/2022-25367.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/11/22/2022-25367/airworthiness-directives-schempp-hirth-flugzeugbau-gmbh-gliders
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-25367-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-1484

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Schempp-Hirth Flugzeugbau GmbH Model Duo Discus and Duo Discus T gliders. This proposed 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 identifies the unsafe condition as the airbrake becoming blocked or jammed in an extended position during high airspeed due to an incorrect adjustment on the airbrake system. This proposed AD would require repetitively inspecting the airbrake system and corrective action as necessary. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 22, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-25367, comments due Jan 6, 2023 (https://www.federalregister.gov/documents/2022/11/22/2022-25367/airworthiness-directives-schempp-hirth-flugzeugbau-gmbh-gliders)

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