# Proposed AD FAA-2009-0714: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145, -145ER, -145MR, -145LR, -145XR, - 145MP, and -145EP Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-10-11
- Products: Embraer - Empresa Brasileira de Aeronautica
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.
- Published: February 23, 2010, 75 FR 7998
- Comments due: March 22, 2010
- Became: [AD 2010-10-11](https://openairdocs.org/ad/2010-10-11)
- Docket: FAA-2009-0714 (https://www.regulations.gov/docket/FAA-2009-0714, where comments are filed)
- Project: 2009-NM-041-AD
- FR document: 2010-3441
- Official PDF: https://openairdocs.org/files/sha256/07/97/07971fc35a004676452c2d8187132bed688e152400032149c2672d379046a1c9 (from https://www.govinfo.gov/content/pkg/FR-2010-02-23/pdf/2010-3441.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/02/23/2010-3441/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145--145er
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1CE8B5D468F17B60862576D3006E58F3.0001
- Page: https://openairdocs.org/proposed/FAA-2009-0714

## Summary

We are revising an earlier NPRM for the products listed above. This action revises the earlier NPRM by expanding the scope. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

It was reported that after commanding the landing gear lever to down the three green landing gear positioning indication was displayed followed by the LG/LEVER DISAGREE EICAS [engine indicating and crew alerting system] message. The crew decided to continue the approach and landing procedure. As soon as the crew identified that the landing gear was not extended properly, a go-around procedure was successfully performed. During maneuver, the airplane settled momentarily onto the flaps and belly. * * * * *

The unsafe condition is the landing gear remaining in the up and locked position during approach and landing. This condition could be accompanied by an invalid EICAS landing gear position indication, which could result in landing with gear in the up position and eliminate controllability of the airplane on the ground. This may consequently result in structural damage to the airplane. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Aug 19, 2009: Notice of proposed rulemaking (NPRM). (first notice), FR document E9-19853, comments due Sep 18, 2009 (https://www.federalregister.gov/documents/2009/08/19/E9-19853/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135bj--135er--135ke)
- Feb 23, 2010: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period., FR document 2010-3441, comments due Mar 22, 2010 (https://www.federalregister.gov/documents/2010/02/23/2010-3441/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145--145er)

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