# Proposed AD FAA-2012-0936: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-08-16
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 18, 2012, 77 FR 57536
- Comments due: November 2, 2012
- Became: [AD 2013-08-16](https://openairdocs.org/ad/2013-08-16)
- Docket: FAA-2012-0936 (https://www.regulations.gov/docket/FAA-2012-0936, where comments are filed)
- Project: 2011-NM-269-AD
- FR document: 2012-22891
- Official PDF: https://openairdocs.org/files/sha256/7e/86/7e86566d20d62afade5a6f10eba28e2016ca676bb099dbf412a6f572c45b1895 (from https://www.govinfo.gov/content/pkg/FR-2012-09-18/pdf/2012-22891.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/09/18/2012-22891/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E65534D97BE2CDEC86257A7D0050B1C8.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0936

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-700 and -700C series airplanes. This proposed AD was prompted by reports of early fatigue cracks at chem-mill areas on the crown skin panels. This proposed AD would require repetitive inspections for cracking of the fuselage skin at certain locations at chem-mill areas, and repair if necessary. We are proposing this AD to detect and correct fatigue cracking of the skin panel at the specified chem-mill step locations, which could result in rapid decompression of the airplane.

## Notices in this docket

- Sep 18, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-22891, comments due Nov 2, 2012 (https://www.federalregister.gov/documents/2012/09/18/2012-22891/airworthiness-directives-the-boeing-company-airplanes)

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