# Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 Airplanes and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP Airplanes
> **Rule** · Final rule. · Published 2007-02-14 · Effective 2007-03-21 · 72 FR 6933
## Document
- **Document number:** E7-2413
- **Category:** airworthiness
- **Manufacturer:** Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 72 FR 6933
- **Publication date:** 2007-02-14
- **Effective date:** 2007-03-21
- **FAA docket:** Docket No. FAA-2006-25925
## Abstract

The FAA is superseding an existing airworthiness directive (AD), which applies to all EMBRAER Model EMB-135 airplanes and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes. That AD currently requires repetitive inspections of the pitot static heating relay K0057 and corrective actions if necessary. That AD also requires doing a terminating modification, which ends the repetitive inspections. This new AD removes the existing repetitive inspections and instead requires a one-time detailed inspection for damage of the relay, relay socket, and silicone gasket; applicable corrective actions; and a new action to modify and re-identify the relay socket. This AD also revises the existing terminating modification--replacing/ rerouting the windowsill drain hoses--into two parts, each with a different, reduced compliance time. This AD results from a report of smoke in the cockpit. We are issuing this AD to prevent ignition of a windowsill drain hose by an overheated relay, which could cause fire and smoke in the cockpit.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/02/14/E7-2413/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-airplanes-and)
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