# Proposed AD FAA-2005-20660: Boeing Model 777-200 and -300 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-13-29
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 22, 2005, 70 FR 14430
- Comments due: May 6, 2005
- Became: [AD 2005-13-29](https://openairdocs.org/ad/2005-13-29)
- Docket: FAA-2005-20660 (https://www.regulations.gov/docket/FAA-2005-20660, where comments are filed)
- Project: 2004-NM-242-AD
- FR document: 05-5573
- Official PDF: https://openairdocs.org/files/sha256/13/7c/137c160c15c2d39e1e942b1bb655de24ca9f420a50283455ec08bd3d451c0f3b (from https://www.govinfo.gov/content/pkg/FR-2005-03-22/pdf/05-5573.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/03/22/05-5573/airworthiness-directives-boeing-model-777-200-and--300-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F8C236A2DCC4B5D986256FCC0050864E.0001
- Page: https://openairdocs.org/proposed/FAA-2005-20660

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 777-200 and -300 series airplanes. This proposed AD would require inspecting for the installation of the tie plate for the wire bundles routed from lower section 41 into the center control stand in the flight deck, and inspecting for any wire chafing or damage and repair if necessary, and installing a tie plate if necessary. This proposed AD is prompted by a report of missing tie plates for the wire bundles. We are proposing this AD to prevent wire chafing, which could result in the loss of flight control, communication, navigation, and engine fire control systems. Loss of these systems could consequently result in a significant reduction of safety margins, an increase in flight crew workload, and in the case where loss of engine fire control is combined with an engine fire, could result in an uncontrollable fire.

## Notices in this docket

- Mar 22, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-5573, comments due May 6, 2005 (https://www.federalregister.gov/documents/2005/03/22/05-5573/airworthiness-directives-boeing-model-777-200-and--300-series-airplanes)

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