# Proposed AD FAA-2012-0860: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-04-11
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 27, 2012, 77 FR 51720
- Comments due: October 11, 2012
- Became: [AD 2013-04-11](https://openairdocs.org/ad/2013-04-11)
- Docket: FAA-2012-0860 (https://www.regulations.gov/docket/FAA-2012-0860, where comments are filed)
- Project: 2012-NM-123-AD
- FR document: 2012-20967
- Official PDF: https://openairdocs.org/files/sha256/eb/e0/ebe0515db2fe14ad265e8f0debc4674bdf574b8798909e6f23a17e20d011b768 (from https://www.govinfo.gov/content/pkg/FR-2012-08-27/pdf/2012-20967.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/08/27/2012-20967/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2689B18F6B174DDD86257A67005DD1C7.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0860

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -800, and -900ER series airplanes. This proposed AD was prompted by incorrect wire support clamps installed within the left environmental cooling systems (ECS) bay, which could allow wiring to come in contact with the exposed metal of the improper clamp. This proposed AD would require inspections to identify the part number of the wire support clamp, related investigative actions, and corrective actions if necessary. We are proposing this AD to prevent electrical arcing and a potential ignition source, which in combination with flammable fuel vapors could result in a fuel tank explosion, and consequent loss of the airplane.

## Notices in this docket

- Aug 27, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-20967, comments due Oct 11, 2012 (https://www.federalregister.gov/documents/2012/08/27/2012-20967/airworthiness-directives-the-boeing-company-airplanes)

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