# Airworthiness Directives; McDonnell Douglas Model MD-11 and DC-10 Series Airplanes, and KC-10A (Military) Airplanes
> **Rule** · Final rule. · Published 1997-04-08 · Effective 1997-05-13 · 62 FR 16664
## Document
- **Document number:** 97-8424
- **Category:** airworthiness
- **Manufacturer:** McDonnell Douglas Model MD-11 and DC-10 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 62 FR 16664
- **Publication date:** 1997-04-08
- **Effective date:** 1997-05-13
- **FAA docket:** Docket No. 95-NM-234-AD
## Abstract

This amendment supersedes an existing airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model MD-11 and DC-10 series airplanes, and KC-10A (military) airplanes. That AD currently requires functional testing to verify proper installation of the electrical connectors to the engine generator and fire bell shutoff switches, and correction of the installation, if necessary. This amendment requires installation of a modification that terminates the requirement to perform repetitive functional tests. This amendment is prompted by the development of a modification that minimizes the possibility of improperly connecting (crossing) the electrical connectors to the fire extinguishing handles. The actions specified by this amendment are intended to prevent the wrong engine-driven generator from being shut down unnecessarily in the event of an engine fire warning.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/04/08/97-8424/airworthiness-directives-mcdonnell-douglas-model-md-11-and-dc-10-series-airplanes-and-kc-10a)
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