# Proposed AD FAA-2011-0304: The Boeing Company Model 757 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-12-15
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 8, 2011, 76 FR 19710
- Comments due: May 23, 2011
- Became: [AD 2012-12-15](https://openairdocs.org/ad/2012-12-15)
- Docket: FAA-2011-0304 (https://www.regulations.gov/docket/FAA-2011-0304, where comments are filed)
- Project: 2010-NM-103-AD
- FR document: 2011-8407
- Official PDF: https://openairdocs.org/files/sha256/d2/ff/d2ffd4930df7c3998f97b4e6522d59d4b542462f2053a94a4c00cd8408f5c74c (from https://www.govinfo.gov/content/pkg/FR-2011-04-08/pdf/2011-8407.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/04/08/2011-8407/airworthiness-directives-the-boeing-company-model-757-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2F965A364F622CCB8625786C004802CB.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0304

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) that applies to all Model 757 airplanes. The existing AD currently requires revising the Airworthiness Limitations (AWLs) section of the Instructions for Continued Airworthiness by incorporating new limitations for fuel tank systems to satisfy Special Federal Aviation Regulation No. 88 requirements. That AD also requires the initial inspection of certain repetitive AWL inspections to phase- in those inspections, and repair if necessary. This proposed AD would require actions that were provided previously as optional actions, and would require a certain initial inspection to be accomplished for a revised AWL. This proposed AD results from a report that an AWL required by the existing AD must be revised. We are proposing this AD to prevent the potential for ignition sources inside fuel tanks caused by latent failures, alterations, repairs, or maintenance actions, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.

## Notices in this docket

- Apr 8, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-8407, comments due May 23, 2011 (https://www.federalregister.gov/documents/2011/04/08/2011-8407/airworthiness-directives-the-boeing-company-model-757-airplanes)

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