# Proposed AD FAA-2010-1243: Cessna Aircraft Company (Cessna) Model 172 Airplanes Modified by Supplemental Type Certificate (STC) SA01303WI

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-06-02
- Products: Cessna
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 15, 2010, 75 FR 78177
- Comments due: January 31, 2011
- Became: [AD 2011-06-02](https://openairdocs.org/ad/2011-06-02)
- Docket: FAA-2010-1243 (https://www.regulations.gov/docket/FAA-2010-1243, where comments are filed)
- Project: 2010-CE-058-AD
- FR document: 2010-31428
- Official PDF: https://openairdocs.org/files/sha256/16/67/16671be464556642fbcbe8ed23b295eaf690c285205671fd0ec9fc148eaa76e3 (from https://www.govinfo.gov/content/pkg/FR-2010-12-15/pdf/2010-31428.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/12/15/2010-31428/airworthiness-directives-cessna-aircraft-company-cessna-model-172-airplanes-modified-by-supplemental
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FBB6745D3BA71E4D862577FA0055CCC5.0001
- Page: https://openairdocs.org/proposed/FAA-2010-1243

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require installing a full authority digital engine control (FADEC) backup battery, replacing the supplement pilot's operating handbook and FAA approved airplane flight manual, and replacing the FADEC backup battery every 12 calendar months. This proposed AD was prompted by an incident where an airplane experienced an in-flight engine shutdown caused by a momentary loss of electrical power to the FADEC. We are proposing this AD to prevent interruption of electrical power to the FADEC, which could result in an uncommanded engine shutdown. This failure could lead to a loss of engine power.

## Notices in this docket

- Dec 15, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-31428, comments due Jan 31, 2011 (https://www.federalregister.gov/documents/2010/12/15/2010-31428/airworthiness-directives-cessna-aircraft-company-cessna-model-172-airplanes-modified-by-supplemental)

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