# Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes
> **Rule** · Final rule. · Published 2004-01-28 · Effective 2004-03-03 · 69 FR 4057
## Document
- **Document number:** 04-1561
- **Category:** airworthiness
- **Manufacturer:** Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 69 FR 4057
- **Publication date:** 2004-01-28
- **Effective date:** 2004-03-03
- **FAA docket:** Docket No. 2002-NM-330-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-135 and EMB-145 series airplanes, that requires relocating the pitot 1 and pitot 2 drain valves from the nose landing gear compartment to the forward electronic compartment, and accomplishing follow-on actions. This action is necessary to prevent ice from damaging the pitot drain valves, which could cause airspeed indication errors, resulting in display of erroneous or misleading information to the flight crew. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/01/28/04-1561/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145-series)
---
*AI Analytics · CC0 1.0*