# Proposed AD 2002-NM-336-AD: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-01-12
- Products: Embraer
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking; reopening of comment period.
- Published: September 8, 2003, 68 FR 52865
- Comments due: October 3, 2003
- Became: [AD 2004-01-12](https://openairdocs.org/ad/2004-01-12)
- Docket: 2002-NM-336-AD
- FR document: 03-22706
- Official PDF: https://openairdocs.org/files/sha256/48/f5/48f53c8fb437bb4efbe32427b624f75a1d8aa5c9132ce0ed3bcd0313ba9bd10a (from https://www.govinfo.gov/content/pkg/FR-2003-09-08/pdf/03-22706.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/09/08/03-22706/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145-series
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/33A2B4C247E857BE86256D9B004BAD3B.0001
- Page: https://openairdocs.org/proposed/2002-NM-336-AD

## Summary

This document revises an earlier proposed airworthiness directive (AD), applicable to certain EMBRAER Model EMB-135 and -145 series airplanes, that would have required operators to inspect the pitot-true air temperature (TAT) relays and the full authority digital engine control (FADEC) electronic interface resistor modules to detect contamination; perform corrective action if necessary; clean the relay/connector pins and sockets; modify the seal between the cockpit console panels and the storm window; and/or install a new protective frame (protective sheets) at the cockpit relay supports. This new action revises the applicability of the proposed rule to add airplanes. The actions specified by this new proposed AD are intended to detect and correct oxidation of the pitot-TAT relay, which could result in increased resistance and overheating of the relay and consequent smoke in the cockpit; and to detect and correct oxidation of the FADEC electronic interface resistor modules, which could result in in-flight uncommanded engine power roll back to idle. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Feb 28, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-4738, comments due Mar 31, 2003 (https://www.federalregister.gov/documents/2003/02/28/03-4738/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145-series)
- Sep 8, 2003: Supplemental notice of proposed rulemaking; reopening of comment period., FR document 03-22706, comments due Oct 3, 2003 (https://www.federalregister.gov/documents/2003/09/08/03-22706/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145-series)

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