# Proposed AD FAA-2013-1057: M7 Aerospace LLC Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2014-06-01
- Products: M7 Aerospace
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 24, 2013, 78 FR 77618
- Comments due: February 7, 2014
- Became: [AD 2014-06-01](https://openairdocs.org/ad/2014-06-01)
- Docket: FAA-2013-1057 (https://www.regulations.gov/docket/FAA-2013-1057, where comments are filed)
- Project: 2013-CE-041-AD
- FR document: 2013-30503
- Official PDF: https://openairdocs.org/files/sha256/99/3a/993a232427d48b22d9b525fee8bbcc9ce6e666977c2f48aa3eb3599b0366f198 (from https://www.govinfo.gov/content/pkg/FR-2013-12-24/pdf/2013-30503.pdf)
- Federal Register: https://www.federalregister.gov/documents/2013/12/24/2013-30503/airworthiness-directives-m7-aerospace-llc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F8C5898BB8D3DA7486257C4B004FD587.0001
- Page: https://openairdocs.org/proposed/FAA-2013-1057

## Summary

We propose to adopt a new airworthiness directive (AD) for all M7 Aerospace LLC Models SA226-AT, SA226-T, SA226-T(B), SA226-TC, SA227- AC (C-26A), SA227-AT, SA227-BC (C-26A), SA227-CC, SA227-DC (C-26B), SA227-TT, SA26-AT, and SA26-T airplanes. This proposed AD was prompted by reports of airplanes with multiple fatigue cracks in the FS 69.31 front pressure bulkhead. This proposed AD would require repetitively inspecting (visually) the FS 51.31 front pressure bulkhead on SA26 series airplanes and FS 69.31 front pressure bulkhead on SA226 and SA227 series airplanes for cracks, and repairing any cracked bulkhead. This proposed AD also requires reporting certain inspection results to M7 Aerospace LLC. We are proposing this AD to correct the unsafe condition on these products.

## Notices in this docket

- Dec 24, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-30503, comments due Feb 7, 2014 (https://www.federalregister.gov/documents/2013/12/24/2013-30503/airworthiness-directives-m7-aerospace-llc-airplanes)

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