# Proposed AD 2001-NM-166-AD: McDonnell Douglas Model MD-11 and -11F Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-04-17
- Products: McDonnell Douglas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 29, 2002, 67 FR 55372
- Comments due: October 15, 2002
- Became: [AD 2003-04-17](https://openairdocs.org/ad/2003-04-17)
- Docket: 2001-NM-166-AD
- FR document: 02-22006
- Official PDF: https://openairdocs.org/files/sha256/71/78/717864af47748e1dd878f71d6b763b319969a40730bff1b352f830045c0bb913 (from https://www.govinfo.gov/content/pkg/FR-2002-08-29/pdf/02-22006.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/08/29/02-22006/airworthiness-directives-mcdonnell-douglas-model-md-11-and--11f-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C0BC8D6C28E0897986256C240052B3E9.0001
- Page: https://openairdocs.org/proposed/2001-NM-166-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model MD-11 and -11F airplanes. This proposal would require an inspection to detect damage of the wiring/bundles routed to the wire support bar of the circuit breaker panel and to the circuit breakers, and an inspection of the wiring/bundles for correct routing. This proposal also would require installation of protective sleeving, spacers, and sta-straps; and corrective/follow-on actions, if necessary. This action is necessary to prevent chafing and consequent arcing or loss of electrical power to associated avionics buses in the upper avionics circuit breaker panel of the main observer's station, which could result in smoke and/or fire in the cockpit. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Aug 29, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-22006, comments due Oct 15, 2002 (https://www.federalregister.gov/documents/2002/08/29/02-22006/airworthiness-directives-mcdonnell-douglas-model-md-11-and--11f-airplanes)

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