# Proposed AD 2000-NM-171-AD: McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes and Model MD-88 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-23-21
- Products: McDonnell Douglas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 18, 2003, 68 FR 36523
- Comments due: August 4, 2003
- Became: [AD 2004-23-21](https://openairdocs.org/ad/2004-23-21)
- Docket: 2000-NM-171-AD
- FR document: 03-15337
- Official PDF: https://openairdocs.org/files/sha256/c8/e5/c8e50a0b2bcb7f4c72eef1bc2c3def154e806a5eb63bf2ca233056087186db58 (from https://www.govinfo.gov/content/pkg/FR-2003-06-18/pdf/03-15337.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/06/18/03-15337/airworthiness-directives-mcdonnell-douglas-model-dc-9-81-md-81-dc-9-82-md-82-dc-9-83-md-83-and
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0F4F92C15B72C98886256D490054A32E.0001
- Page: https://openairdocs.org/proposed/2000-NM-171-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) airplanes and Model MD-88 airplanes. This proposal would require a general visual inspection for chafing of the power feeder cables of the auxiliary power unit (APU), and repair if necessary. This proposal also would require replacement of a support bracket located on the left side of the lower cargo compartment with a new "U" shaped bracket. This action is necessary to prevent chafing of the power feeder cables of the APU, which could result in electrical arcing to adjacent structure and consequent fire in the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Jun 18, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-15337, comments due Aug 4, 2003 (https://www.federalregister.gov/documents/2003/06/18/03-15337/airworthiness-directives-mcdonnell-douglas-model-dc-9-81-md-81-dc-9-82-md-82-dc-9-83-md-83-and)

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