# Airworthiness Directives; McDonnell Douglas Model MD-90-30 Airplanes
> **Rule** · Final rule. · Published 2002-05-16 · Effective 2002-06-20 · 67 FR 34818
## Document
- **Document number:** 02-12066
- **Category:** airworthiness
- **Manufacturer:** McDonnell Douglas Model MD-90-30
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 67 FR 34818
- **Publication date:** 2002-05-16
- **Effective date:** 2002-06-20
- **FAA docket:** Docket No. 2000-NM-198-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-90-30 airplanes, that requires modification of the main battery ground stud and installation of a nameplate which indicates torque requirements for the ground stud nut. The actions specified by this AD are intended to prevent the ground stud nut from being inadequately tightened or becoming loose, which could result in electrical arcing between the ground stud and the adjacent structure, leading to damage to electrical or electronic equipment or possibly to fire in the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/05/16/02-12066/airworthiness-directives-mcdonnell-douglas-model-md-90-30-airplanes)
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