# Airworthiness Directives; McDonnell Douglas Model MD-90-30 Airplanes
> **Rule** · Final rule. · Published 2004-04-06 · Effective 2004-05-11 · 69 FR 17901
## Document
- **Document number:** 04-7350
- **Category:** airworthiness
- **Manufacturer:** McDonnell Douglas Model MD-90-30
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 69 FR 17901
- **Publication date:** 2004-04-06
- **Effective date:** 2004-05-11
- **FAA docket:** Docket No. 2001-NM-226-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-90-30 airplanes. For some airplanes, this action requires replacing one 3-phase limiter block assembly, 6 current limiters, and hardware for 9 electrical cables with new parts. For other airplanes, this action requires inspecting 6 current limiters and 3 spare current limiters and replacing any defective current limiters with new current limiters. This action is necessary to prevent overheating of the terminal studs on the 3-phase limiter blocks and associated current limiters, which could cause a fire in the airplane. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/04/06/04-7350/airworthiness-directives-mcdonnell-douglas-model-md-90-30-airplanes)
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