# Proposed AD FAA-2007-28094: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 Airplanes and Model ERJ 190 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2007-16-09
- Products: Embraer
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 8, 2007, 72 FR 26008
- Comments due: June 7, 2007
- Became: [AD 2007-16-09](https://openairdocs.org/ad/2007-16-09)
- Docket: FAA-2007-28094 (https://www.regulations.gov/docket/FAA-2007-28094, where comments are filed)
- Project: 2006-NM-258-AD
- FR document: E7-8761
- Official PDF: https://openairdocs.org/files/sha256/a0/ef/a0ef3a156f77df3d92dda4d23c441f392c4c82862a57fc13002f5bbd40515f12 (from https://www.govinfo.gov/content/pkg/FR-2007-05-08/pdf/E7-8761.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/05/08/E7-8761/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-erj-170-airplanes-and
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8638CE9A922E8F7D862572D5004FD825.0001
- Page: https://openairdocs.org/proposed/FAA-2007-28094

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) that applies to all EMBRAER Model ERJ 170-100 LR, -100 STD, -100 SE, and -100 SU airplanes. The existing AD currently requires repetitively replacing the low-stage check valve and associated seals of the right-hand engine bleed system. This proposed AD adds new airplanes to that existing requirement. For all airplanes, this proposed AD would also require repetitively replacing the low-stage check valve and associated seals of the left-hand engine bleed system with a new check valve and new seals. This proposed AD results from a report that an engine shut down during flight due to the failure of the low-stage check valve to close. We are proposing this AD to prevent failure of the low-stage check valve, which could result in an engine shutting down during flight.

## Notices in this docket

- May 8, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-8761, comments due Jun 7, 2007 (https://www.federalregister.gov/documents/2007/05/08/E7-8761/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-erj-170-airplanes-and)

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