# Proposed AD FAA-2006-24814: Boeing Model 767 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-24-04
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 22, 2006, 71 FR 29275
- Comments due: July 6, 2006
- Became: [AD 2006-24-04](https://openairdocs.org/ad/2006-24-04)
- Docket: FAA-2006-24814 (https://www.regulations.gov/docket/FAA-2006-24814, where comments are filed)
- Project: 2006-NM-093-AD
- FR document: E6-7740
- Official PDF: https://openairdocs.org/files/sha256/f4/ad/f4ade82f7818871850f18b18fb732dc920b81cbcdf1f2bd6b03f117d43cb9b2c (from https://www.govinfo.gov/content/pkg/FR-2006-05-22/pdf/E6-7740.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/05/22/E6-7740/airworthiness-directives-boeing-model-767-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/922B21CC9D8B694286257176005C20B2.0001
- Page: https://openairdocs.org/proposed/FAA-2006-24814

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Boeing Model 767 airplanes. This proposed AD would require repetitive detailed and high frequency eddy current (HFEC) inspections of the station (STA) 1809.5 bulkhead for cracking and corrective actions if necessary. This proposed AD results from fatigue cracks found in the forward outer chord and horizontal inner chord at STA 1809.5. We are proposing this AD to detect and correct cracking in the bulkhead structure at STA 1809.5, which could result in failure of the bulkhead structure for carrying the flight loads of the horizontal stabilizer, and consequent loss of controllability of the airplane.

## Notices in this docket

- May 22, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-7740, comments due Jul 6, 2006 (https://www.federalregister.gov/documents/2006/05/22/E6-7740/airworthiness-directives-boeing-model-767-airplanes)

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