# Proposed AD 99-NM-297-AD: McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 Series Airplanes; C-9 Airplanes; Model DC-9-81, -82, -83, and -87 Series Airplanes; and Model MD-88 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-24-19
- Products: McDonnell Douglas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 23, 2001, 66 FR 38183
- Comments due: September 6, 2001
- Became: [AD 2001-24-19](https://openairdocs.org/ad/2001-24-19)
- Docket: 99-NM-297-AD
- FR document: 01-17590
- Official PDF: https://openairdocs.org/files/sha256/00/48/004856bd7a113e5e0533335a46ccfdaca0a4c84fcaf7a398a0f9eb0eb46f8e15 (from https://www.govinfo.gov/content/pkg/FR-2001-07-23/pdf/01-17590.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/07/23/01-17590/airworthiness-directives-mcdonnell-douglas-model-dc-9-10--20--30--40-and--50-series-airplanes-c-9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2DEA4420BB63652686256A96005CD4A7.0001
- Page: https://openairdocs.org/proposed/99-NM-297-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 series airplanes; C-9 airplanes; Model DC-9-81, -82, -83, and -87 series airplanes; and Model MD-88 airplanes. This proposal would require an inspection to detect chafing or overheat damage of the electrical wires located at fuselage station Y=110.000 bulkhead of the lower nose left tunnel; and corrective actions, if necessary. This proposal also would require replacing the external power ground stud with a new ground stud using new attaching parts; torquing new attachments; and installing a nameplate. This action is necessary to prevent loose external power ground wires, which could cause arcing and overheated wire insulation and consequent smoke/fire in the cockpit. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Jul 23, 2001: Notice of proposed rulemaking (NPRM). (first notice), FR document 01-17590, comments due Sep 6, 2001 (https://www.federalregister.gov/documents/2001/07/23/01-17590/airworthiness-directives-mcdonnell-douglas-model-dc-9-10--20--30--40-and--50-series-airplanes-c-9)

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