# Proposed AD FAA-2016-9120: M7 Aerospace LLC

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2016-25-12
- Products: M7 Aerospace
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 13, 2016, 81 FR 62845
- Comments due: October 28, 2016
- Became: [AD 2016-25-12](https://openairdocs.org/ad/2016-25-12)
- Docket: FAA-2016-9120 (https://www.regulations.gov/docket/FAA-2016-9120, where comments are filed)
- Project: 2016-CE-024-AD
- FR document: 2016-21704
- Official PDF: https://openairdocs.org/files/sha256/2f/f4/2ff4307084fc951ec100316d3899a6cd09a55de492ce43e5ad05593ede758877 (from https://www.govinfo.gov/content/pkg/FR-2016-09-13/pdf/2016-21704.pdf)
- Federal Register: https://www.federalregister.gov/documents/2016/09/13/2016-21704/airworthiness-directives-m7-aerospace-llc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C037713A436A07048625802D0050EC8B.0001
- Page: https://openairdocs.org/proposed/FAA-2016-9120

## 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), and SA227-TT airplanes. This proposed AD was prompted by corrosion and stress corrosion cracking of the pitch trim actuator upper attach fittings of the horizontal stabilizer front spar. This proposed AD would require repetitive inspections of the pitch trim actuator upper attach fittings for corrosion and/or cracking in the bolt holes and the web/flange radius with replacement of fittings as necessary. We are proposing this AD to prevent jamming and/or loss of control of the horizontal stabilizer, which could result in partial or complete loss of airplane pitch control.

## Notices in this docket

- Sep 13, 2016: Notice of proposed rulemaking (NPRM). (first notice), FR document 2016-21704, comments due Oct 28, 2016 (https://www.federalregister.gov/documents/2016/09/13/2016-21704/airworthiness-directives-m7-aerospace-llc)

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