# Proposed AD FAA-2017-0638: Diamond Aircraft Industries GmbH Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-18-10
- Products: Diamond Aircraft Industries
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 23, 2017, 82 FR 28594
- Comments due: August 7, 2017
- Became: [AD 2017-18-10](https://openairdocs.org/ad/2017-18-10)
- Docket: FAA-2017-0638 (https://www.regulations.gov/docket/FAA-2017-0638, where comments are filed)
- Project: 2017-CE-018-AD
- FR document: 2017-13139
- Official PDF: https://openairdocs.org/files/sha256/c7/48/c74841c927ffa1283430bb91ebf5ed635d858769c20677e5707eba55b35efcb8 (from https://www.govinfo.gov/content/pkg/FR-2017-06-23/pdf/2017-13139.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/06/23/2017-13139/airworthiness-directives-diamond-aircraft-industries-gmbh-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/157EE18690BD05E4862581480051425A.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0638

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Diamond Aircraft Industries GmbH Models DA 42, DA 42 M-NG, and DA 42 NG airplanes. 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 crack formation on the flap bell crank, which could cause the flap bell crank to fail. We are issuing this proposed AD to require actions to address the unsafe condition on these products.

## Notices in this docket

- Jun 23, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-13139, comments due Aug 7, 2017 (https://www.federalregister.gov/documents/2017/06/23/2017-13139/airworthiness-directives-diamond-aircraft-industries-gmbh-airplanes)

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