# Proposed AD FAA-2011-0025: The Boeing Company Model 777 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-07-06
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 19, 2011, 76 FR 3054
- Comments due: March 7, 2011
- Became: [AD 2012-07-06](https://openairdocs.org/ad/2012-07-06)
- Docket: FAA-2011-0025 (https://www.regulations.gov/docket/FAA-2011-0025, where comments are filed)
- Project: 2010-NM-208-AD
- FR document: 2011-1017
- Official PDF: https://openairdocs.org/files/sha256/22/93/2293a223a10ae028b754fabd9c28c97661fdbc1910b16e616e0938e5b296bc07 (from https://www.govinfo.gov/content/pkg/FR-2011-01-19/pdf/2011-1017.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/01/19/2011-1017/airworthiness-directives-the-boeing-company-model-777-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5E65B09AEA1763738625781D0045F910.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0025

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require revising the maintenance program to update inspection requirements to detect fatigue cracking of principal structural elements (PSEs). This proposed AD was prompted by a new revision to the airworthiness limitations of the maintenance planning document. We are proposing this AD to ensure that fatigue cracking of various PSEs is detected and corrected; such fatigue cracking could adversely affect the structural integrity of these airplanes.

## Notices in this docket

- Jan 19, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-1017, comments due Mar 7, 2011 (https://www.federalregister.gov/documents/2011/01/19/2011-1017/airworthiness-directives-the-boeing-company-model-777-airplanes)

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