# Proposed AD FAA-2011-1094: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-07-08
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 26, 2011, 76 FR 66200
- Comments due: December 12, 2011
- Became: [AD 2013-07-08](https://openairdocs.org/ad/2013-07-08)
- Docket: FAA-2011-1094 (https://www.regulations.gov/docket/FAA-2011-1094, where comments are filed)
- Project: 2011-NM-070-AD
- FR document: 2011-27652
- Official PDF: https://openairdocs.org/files/sha256/06/11/06114612ff9d19a4b88a7ad6c16946b5f4bb87d3d58766e20b40d5bd30f8721a (from https://www.govinfo.gov/content/pkg/FR-2011-10-26/pdf/2011-27652.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/10/26/2011-27652/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7303E0130260C3D486257935006FD915.0001
- Page: https://openairdocs.org/proposed/FAA-2011-1094

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 757 airplanes. This proposed AD would require inspecting for discrepancies and insufficient coverage of the secondary fuel barrier, determining the thickness of the secondary fuel barrier, and corrective actions if necessary. This proposed AD was prompted by reports that inspections of the wing center section revealed defective, misapplied, or missing secondary fuel vapor barrier on the center fuel tank. We are proposing this AD to detect and correct defective surfaces and insufficient thickness of secondary fuel barrier, which could allow fuel leaks or fumes into the pressurized cabin, and allow fuel or fuel vapors to come in contact with an ignition source, which could result in a fire or an explosion.

## Notices in this docket

- Oct 26, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-27652, comments due Dec 12, 2011 (https://www.federalregister.gov/documents/2011/10/26/2011-27652/airworthiness-directives-the-boeing-company-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.