# Proposed AD FAA-2013-0812: Diamond Aircraft Industries Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-24-14
- Products: Diamond Aircraft Industries
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 17, 2013, 78 FR 57104
- Comments due: November 1, 2013
- Became: [AD 2013-24-14](https://openairdocs.org/ad/2013-24-14)
- Docket: FAA-2013-0812 (https://www.regulations.gov/docket/FAA-2013-0812, where comments are filed)
- Project: 2013-CE-023-AD
- FR document: 2013-22570
- Official PDF: https://openairdocs.org/files/sha256/27/05/2705bb82ae71ff9f9982e990fa7ae5e1a6ae7391b5c564656a410bbdd4483fd2 (from https://www.govinfo.gov/content/pkg/FR-2013-09-17/pdf/2013-22570.pdf)
- Federal Register: https://www.federalregister.gov/documents/2013/09/17/2013-22570/airworthiness-directives-diamond-aircraft-industries-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7C067FFFCFEC825E86257BE90048A651.0001
- Page: https://openairdocs.org/proposed/FAA-2013-0812

## Summary

We propose to adopt a new airworthiness directive (AD) for Diamond Aircraft Industries Model DA 40 and DA 40 F 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 fatigue strength found in the aft main spar does not ensure unlimited lifetime structural integrity. We are issuing this proposed AD to require actions to address the unsafe condition on these products.

## Notices in this docket

- Sep 17, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-22570, comments due Nov 1, 2013 (https://www.federalregister.gov/documents/2013/09/17/2013-22570/airworthiness-directives-diamond-aircraft-industries-airplanes)

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