# Proposed AD FAA-2011-0566: The Boeing Company Model 747-100, 747- 100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-05-03
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 14, 2011, 76 FR 34625
- Comments due: July 29, 2011
- Became: [AD 2012-05-03](https://openairdocs.org/ad/2012-05-03)
- Docket: FAA-2011-0566 (https://www.regulations.gov/docket/FAA-2011-0566, where comments are filed)
- Project: 2010-NM-271-AD
- FR document: 2011-14697
- Official PDF: https://openairdocs.org/files/sha256/6d/50/6d50123358e96778a7d710ad2f790b69fedca7df54fc10043ba3818f88d71d71 (from https://www.govinfo.gov/content/pkg/FR-2011-06-14/pdf/2011-14697.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/06/14/2011-14697/airworthiness-directives-the-boeing-company-model-747-100-747-100b-747-100b-sud-747-200b-747-200c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/659AEF9E2BB7F6CA862578AF00463218.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0566

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require modification of the fluid drain path in the leading edge area of the wing. This proposed AD was prompted by a design review following a ground fire incident and reports of flammable fluid leaks from the wing leading edge area onto the engine exhaust area. We are proposing this AD to prevent flammable fluid from leaking onto the engine exhaust nozzle, which could result in a fire.

## Notices in this docket

- Jun 14, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-14697, comments due Jul 29, 2011 (https://www.federalregister.gov/documents/2011/06/14/2011-14697/airworthiness-directives-the-boeing-company-model-747-100-747-100b-747-100b-sud-747-200b-747-200c)

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