# Proposed AD FAA-2010-0377: The Boeing Company Model 767 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-03-15
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 8, 2010, 75 FR 17887
- Comments due: May 24, 2010
- Became: [AD 2011-03-15](https://openairdocs.org/ad/2011-03-15)
- Docket: FAA-2010-0377 (https://www.regulations.gov/docket/FAA-2010-0377, where comments are filed)
- Project: 2009-NM-246-AD
- FR document: 2010-7945
- Official PDF: https://openairdocs.org/files/sha256/56/37/5637583bdc92407663fcc9b414517d829fc3d3f986094ff549ad1e1fce686ec0 (from https://www.govinfo.gov/content/pkg/FR-2010-04-08/pdf/2010-7945.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/04/08/2010-7945/airworthiness-directives-the-boeing-company-model-767-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5AC6A4659FF51DD2862576FF004C0814.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0377

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Model 767 airplanes. This proposed AD would require doing a detailed inspection for correct main track downstop assembly, thread protrusion, and damaged and missing parts of the main track downstop assemblies of the outboard slats, and related investigative and corrective actions if necessary. This proposed AD would also require doing a detailed inspection for foreign objects debris and damage to the wall of the track housing of the outboard slats, and corrective actions if necessary. This proposed AD results from reports of broken bolts in the outboard slat main track downstop assembly. We are proposing this AD to detect and correct incorrectly installed main track downstop assemblies, which can allow the main track downstop hardware to fall into the track housing and cause a puncture in the track housing when the slat is retracted. This condition, if not corrected, could result in a fuel leak and an increasedrisk of fire.

## Notices in this docket

- Apr 8, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-7945, comments due May 24, 2010 (https://www.federalregister.gov/documents/2010/04/08/2010-7945/airworthiness-directives-the-boeing-company-model-767-airplanes)

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