# Proposed AD FAA-2009-0659: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135BJ, -135ER, -135KE, -135KL, and -135LR Airplanes; and EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and - 145EP Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-03-07
- Products: Embraer
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 30, 2009, 74 FR 37965
- Comments due: August 31, 2009
- Became: [AD 2010-03-07](https://openairdocs.org/ad/2010-03-07)
- Docket: FAA-2009-0659 (https://www.regulations.gov/docket/FAA-2009-0659, where comments are filed)
- Project: 2009-NM-060-AD
- FR document: E9-18158
- Official PDF: https://openairdocs.org/files/sha256/df/0f/df0ffd21a3f974cbb89bf7f4abc13d45b60024d759da9c36b2be2a0729dbab01 (from https://www.govinfo.gov/content/pkg/FR-2009-07-30/pdf/E9-18158.pdf)
- Federal Register: https://www.federalregister.gov/documents/2009/07/30/E9-18158/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135bj--135er--135ke
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/82BA5169A1A9E8E686257603004C3443.0001
- Page: https://openairdocs.org/proposed/FAA-2009-0659

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. 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 has been found occurrences of main landing gear (MLG) trailing arm pins broken due to a fatigue mechanism induced by an excessive torque applied during the assemblage of auxiliary door support attachment and consequent deformation of the MLG trailing arm axle. A broken pin can lead to loss of the MLG trailing arm axle, disconnecting the trailing arm from the main strut, which affects the airplane controllability on ground. * * * * *

The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Jul 30, 2009: Notice of proposed rulemaking (NPRM). (first notice), FR document E9-18158, comments due Aug 31, 2009 (https://www.federalregister.gov/documents/2009/07/30/E9-18158/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135bj--135er--135ke)

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