# Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2001-05-24 · Effective 2001-06-08 · 66 FR 28646
## Document
- **Document number:** 01-12986
- **Category:** airworthiness
- **Manufacturer:** Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 66 FR 28646
- **Publication date:** 2001-05-24
- **Effective date:** 2001-06-08
- **FAA docket:** Docket No. 2001-NM-116-AD
## Abstract

This document adopts a new airworthiness directive (AD) that is applicable to certain EMBRAER Model EMB-135 and -145 series airplanes. This action requires a one-time inspection to detect incorrect wiring of electrical connectors to the pressure switches and cartridges on the fire extinguisher bottles for the engines and the auxiliary power unit (APU); disconnection and reconnection of the wiring, as necessary; and adjustment of the length of the harnesses on the fire extinguisher bottles to avoid future misconnections. This action is prompted by the issuance of mandatory continuing airworthiness information issued by a foreign civil airworthiness authority. This action is necessary to prevent the issuance of erroneous commands or the receipt of erroneous information pertaining to the fire extinguisher system for the engines and the APU, which could result in the inability to put out a fire in an engine or in the APU. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/05/24/01-12986/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145-series)
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