# Proposed AD FAA-2014-0232: the Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2014-22-05
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 17, 2014, 79 FR 21655
- Comments due: June 2, 2014
- Became: [AD 2014-22-05](https://openairdocs.org/ad/2014-22-05)
- Docket: FAA-2014-0232 (https://www.regulations.gov/docket/FAA-2014-0232, where comments are filed)
- Project: 2013-NM-100-AD
- FR document: 2014-08730
- Official PDF: https://openairdocs.org/files/sha256/6c/b8/6cb84bf8a839ca430889df7abc9397f94b3337922ab2ecf223fdd4ef7e9e0cda (from https://www.govinfo.gov/content/pkg/FR-2014-04-17/pdf/2014-08730.pdf)
- Federal Register: https://www.federalregister.gov/documents/2014/04/17/2014-08730/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AEFAF27EB58BB1AE86257CBD0046F5D3.0001
- Page: https://openairdocs.org/proposed/FAA-2014-0232

## Summary

We propose to adopt a new airworthiness directive (AD) for certain the Boeing Company Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that the bulkhead dome tees, which connect the bulkhead web to the fuselage, are subject to widespread fatigue damage (WFD). This proposed AD would require repetitive inspections of the improved ventral aft pressure bulkhead tees and replacement if necessary. We are proposing this AD to detect and correct fatigue cracking of the bulkhead dome tees, which could result in reduced structural integrity and rapid decompression of the airplane.

## Notices in this docket

- Apr 17, 2014: Notice of proposed rulemaking (NPRM). (first notice), FR document 2014-08730, comments due Jun 2, 2014 (https://www.federalregister.gov/documents/2014/04/17/2014-08730/airworthiness-directives-the-boeing-company-airplanes)

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