# Proposed AD FAA-2010-1312: The Boeing Company Model 777-200, - 200LR, -300, and -300ER Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-21-03
- Products: Boeing
- Product type: Aircraft
- Action: Notice of Proposed Rulemaking (NPRM).
- Published: January 18, 2011, 76 FR 2846
- Comments due: March 4, 2011
- Became: [AD 2011-21-03](https://openairdocs.org/ad/2011-21-03)
- Docket: FAA-2010-1312 (https://www.regulations.gov/docket/FAA-2010-1312, where comments are filed)
- Project: 2010-NM-220-AD
- FR document: 2011-876
- Official PDF: https://openairdocs.org/files/sha256/e2/f7/e2f71539255b960e515ddf446519f53328d2d07442faa8e77ce900b7b56d5b73 (from https://www.govinfo.gov/content/pkg/FR-2011-01-18/pdf/2011-876.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/01/18/2011-876/airworthiness-directives-the-boeing-company-model-777-200--200lr--300-and--300er-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FB04652DE11369058625781C004E08E8.0001
- Page: https://openairdocs.org/proposed/FAA-2010-1312

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require installing foreign object debris (FOD) rubber shields over the primary and secondary external power connectors for certain airplanes, and wrapping fire-resistant silicone tape around the hydraulic tube for certain other airplanes. This proposed AD was prompted by a report of a fire in the main equipment center due to failure of an external power connector, which caused high-temperature arcing and subsequent splatter of molten copper on an adjacent hydraulic tube, creating a hole in the tube and spraying hydraulic fluid into the power connector, resulting in a fire. In addition there were several reports of overheating or arcing of external power connectors, and one report of a fire due to arcing caused by FOD. We are proposing this AD to prevent FOD from entering the primary and secondary external power connectors, which could result in overheating or arcing andconsequent fire in the main equipment center.

## Notices in this docket

- Jan 18, 2011: Notice of Proposed Rulemaking (NPRM). (first notice), FR document 2011-876, comments due Mar 4, 2011 (https://www.federalregister.gov/documents/2011/01/18/2011-876/airworthiness-directives-the-boeing-company-model-777-200--200lr--300-and--300er-series-airplanes)

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