# Proposed AD FAA-2024-2135: Schempp-Hirth Flugzeugbau GmbH Gliders

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-04-14
- Products: Schempp-Hirth Flugzeugbau
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 30, 2024, 89 FR 70580
- Comments due: October 15, 2024
- Became: [AD 2025-04-14](https://openairdocs.org/ad/2025-04-14)
- Docket: FAA-2024-2135 (https://www.regulations.gov/docket/FAA-2024-2135, where comments are filed)
- Project: MCAI-2024-00157-G
- FR document: 2024-19476
- Official PDF: https://openairdocs.org/files/sha256/3c/9c/3c9cf9dbcc1bdcc9df58e7e371e2aaa0b02b233bf886ccef2ef3a4f00ed3c3ce (from https://www.govinfo.gov/content/pkg/FR-2024-08-30/pdf/2024-19476.pdf)
- Federal Register: https://www.federalregister.gov/documents/2024/08/30/2024-19476/airworthiness-directives-schempp-hirth-flugzeugbau-gmbh-gliders
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2024-19476-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2024-2135

## 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 was prompted by reports of gliders' canopies opening during air tow. This proposed AD would require modifying the canopy locking mechanism. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 30, 2024: Notice of proposed rulemaking (NPRM). (first notice), FR document 2024-19476, comments due Oct 15, 2024 (https://www.federalregister.gov/documents/2024/08/30/2024-19476/airworthiness-directives-schempp-hirth-flugzeugbau-gmbh-gliders)

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