# Proposed AD FAA-2012-0998: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-19-23
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 24, 2012, 77 FR 58791
- Comments due: November 8, 2012
- Became: [AD 2013-19-23](https://openairdocs.org/ad/2013-19-23)
- Docket: FAA-2012-0998 (https://www.regulations.gov/docket/FAA-2012-0998, where comments are filed)
- Project: 2011-NM-249-AD
- FR document: 2012-23434
- Official PDF: https://openairdocs.org/files/sha256/f3/b4/f3b46baec337deaa4d5a1e8114eee84373ecc6853b3aebfbfab0b21c95dad17a (from https://www.govinfo.gov/content/pkg/FR-2012-09-24/pdf/2012-23434.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/09/24/2012-23434/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E0034C573C81A77686257A8300697E72.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0998

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This proposed AD was prompted by a new revision to the airworthiness limitations of the maintenance planning data document. This proposed AD would require revising the maintenance program to update inspection requirements to detect fatigue cracking of principal structural elements (PSEs). We are proposing this AD to detect and correct fatigue cracking of various PSEs, which could adversely affect the structural integrity of these airplanes.

## Notices in this docket

- Sep 24, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-23434, comments due Nov 8, 2012 (https://www.federalregister.gov/documents/2012/09/24/2012-23434/airworthiness-directives-the-boeing-company-airplanes)

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