# Proposed AD FAA-2009-0614: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and Model ERJ 190 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-10-07
- Products: Embraer
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 22, 2009, 74 FR 36129
- Comments due: August 21, 2009
- Became: [AD 2010-10-07](https://openairdocs.org/ad/2010-10-07)
- Docket: FAA-2009-0614 (https://www.regulations.gov/docket/FAA-2009-0614, where comments are filed)
- Project: 2009-NM-045-AD
- FR document: E9-17347
- Official PDF: https://openairdocs.org/files/sha256/ce/07/ce07f5732ddf698fc004e6e3acb3cf49c19f0ed046915c88ddc17bce1045cdfd (from https://www.govinfo.gov/content/pkg/FR-2009-07-22/pdf/E9-17347.pdf)
- Federal Register: https://www.federalregister.gov/documents/2009/07/22/E9-17347/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-erj-170-and-model-erj
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9058B7DBE1F275B3862575FB0051DE74.0001
- Page: https://openairdocs.org/proposed/FAA-2009-0614

## 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 the occurrence of outboard slat skew sensor failure in open or closed position. The combination of an outboard slat skew sensor failed closed, an outboard slat actuator structural failure (rupture) and its adjacent actuator torque limiter failing high (allows higher loads to the panel structure) occurring in the same slat surface, under normal flight loads, may lead [the] slat surface to detach from the wing with the possibility of hitting and damaging the horizontal stabilizer and elevator, which may affect the airplane controllability. * * * * * The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Jul 22, 2009: Notice of proposed rulemaking (NPRM). (first notice), FR document E9-17347, comments due Aug 21, 2009 (https://www.federalregister.gov/documents/2009/07/22/E9-17347/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-erj-170-and-model-erj)

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