# Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes
> **Rule** · Final rule. · Published 2004-12-09 · Effective 2005-01-13 · 69 FR 71339
## Document
- **Document number:** 04-26918
- **Category:** airworthiness
- **Manufacturer:** Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 69 FR 71339
- **Publication date:** 2004-12-09
- **Effective date:** 2005-01-13
- **FAA docket:** Docket No. FAA-2004-19767
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all EMBRAER Model EMB-135 and -145 series airplanes. This AD requires a one-time inspection of each passenger service unit (PSU) to determine the serial number of the printed circuit board (PCB) installed in each PSU, replacement of the PCB if necessary, related investigative actions, and other specified actions. This AD is prompted by reports that PSUs on two airplanes emitted smoke. We are issuing this AD to prevent failure of a PSU, which could result in smoke or fire in the airplane's passenger cabin.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/12/09/04-26918/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145-series)
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