# Proposed AD FAA-2012-0933: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-07-07
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 12, 2012, 77 FR 56170
- Comments due: October 29, 2012
- Became: [AD 2013-07-07](https://openairdocs.org/ad/2013-07-07)
- Docket: FAA-2012-0933 (https://www.regulations.gov/docket/FAA-2012-0933, where comments are filed)
- Project: 2012-NM-107-AD
- FR document: 2012-22392
- Official PDF: https://openairdocs.org/files/sha256/63/46/6346698a45e68ed947aa150c23cd620183a02eb894877799a699d0d6e0dcefd0 (from https://www.govinfo.gov/content/pkg/FR-2012-09-12/pdf/2012-22392.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/09/12/2012-22392/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3E46B3F12DB8737486257A77004AF321.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0933

## Summary

We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This proposed AD was prompted by reports of an incorrect procedure used to apply the wear and corrosion protective surface coating to attach pins of the horizontal stabilizer rear spar. This proposed AD would require inspecting to determine the part number of the attach pins of the horizontal stabilizer rear spar, and replacing certain attach pins with new, improved attach pins. We are proposing this AD to prevent premature failure of the attach pins, which could cause reduced structural integrity of the horizontal stabilizer to fuselage attachment, resulting in loss of control of the airplane.

## Notices in this docket

- Sep 12, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-22392, comments due Oct 29, 2012 (https://www.federalregister.gov/documents/2012/09/12/2012-22392/airworthiness-directives-the-boeing-company-airplanes)

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