# Proposed AD FAA-2010-0764: The Boeing Company Model 737-900ER Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-24-01
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 10, 2010, 75 FR 48281
- Comments due: September 24, 2010
- Became: [AD 2010-24-01](https://openairdocs.org/ad/2010-24-01)
- Docket: FAA-2010-0764 (https://www.regulations.gov/docket/FAA-2010-0764, where comments are filed)
- Project: 2009-NM-260-AD
- FR document: 2010-19695
- Official PDF: https://openairdocs.org/files/sha256/c9/a6/c9a60f00aba07f177cc1caf1c316f8643c95eb3809f5574dd5859ce9ed4e0cd1 (from https://www.govinfo.gov/content/pkg/FR-2010-08-10/pdf/2010-19695.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/08/10/2010-19695/airworthiness-directives-the-boeing-company-model-737-900er-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A54F3593BD5C70678625777B00653F47.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0764

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Model 737-900ER series airplanes. This proposed AD would require doing a one-time general visual inspection for a keyway in two fuel tank access door cutouts, and related investigative and corrective actions if necessary. This proposed AD results from reports of cracks emanating from the keyway of the fuel tank access hole. We are proposing this AD to detect and correct such cracking, which could result in the loss of the lower wing skin load path and consequent structural failure of the wing.

## Notices in this docket

- Aug 10, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-19695, comments due Sep 24, 2010 (https://www.federalregister.gov/documents/2010/08/10/2010-19695/airworthiness-directives-the-boeing-company-model-737-900er-series-airplanes)

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