# Proposed AD FAA-2011-1155: Schempp-Hirth Flugzeugbau GmbH Gliders

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-01-02
- Products: Schempp-Hirth Flugzeugbau
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 21, 2011, 76 FR 65421
- Comments due: December 5, 2011
- Became: [AD 2012-01-02](https://openairdocs.org/ad/2012-01-02)
- Docket: FAA-2011-1155 (https://www.regulations.gov/docket/FAA-2011-1155, where comments are filed)
- Project: 2011-CE-032-AD
- FR document: 2011-27267
- Official PDF: https://openairdocs.org/files/sha256/4f/55/4f55de36e5c861d5b9451a68a124701c2cbe24c518036ef6f25a52bb1c8c2188 (from https://www.govinfo.gov/content/pkg/FR-2011-10-21/pdf/2011-27267.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/10/21/2011-27267/airworthiness-directives-schempp-hirth-flugzeugbau-gmbh-gliders
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2221ECA3D9C3172D862579300046C248.0001
- Page: https://openairdocs.org/proposed/FAA-2011-1155

## Summary

We propose to adopt a new airworthiness directive (AD) for Schempp-Hirth Flugzeugbau GmbH Model Discus 2cT 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 describes the unsafe condition as:

It has been reported that small cracks on engine pylons, in the area of the lower engine support, were not detected through the "standard'' inspection required by the daily inspection instructions. The cracks were discovered only after having significantly grown.

This condition, if not detected and corrected, could lead to an engine pylon failure and consequent damage to the aeroplane or injury to people on the ground.

The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Oct 21, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-27267, comments due Dec 5, 2011 (https://www.federalregister.gov/documents/2011/10/21/2011-27267/airworthiness-directives-schempp-hirth-flugzeugbau-gmbh-gliders)

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