# Proposed AD FAA-2006-24076: Empresa Brasileira del Aeronautica S.A. (EMBRAER) Model EMB-120, -120ER, -120FC, -120QC, and -120RT Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-12-14
- Products: Embraer
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 7, 2006, 71 FR 11333
- Comments due: April 6, 2006
- Became: [AD 2006-12-14](https://openairdocs.org/ad/2006-12-14)
- Docket: FAA-2006-24076 (https://www.regulations.gov/docket/FAA-2006-24076, where comments are filed)
- Project: 2006-NM-015-AD
- FR document: 06-2158
- Official PDF: https://openairdocs.org/files/sha256/11/58/1158740b33494f832de0b5751ba336d079bf915b847b6307063bf9e874191d80 (from https://www.govinfo.gov/content/pkg/FR-2006-03-07/pdf/06-2158.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/03/07/06-2158/airworthiness-directives-empresa-brasileira-del-aeronautica-sa-embraer-model-emb-120--120er--120fc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6BC828A5436EBA248625712A005E4C88.0001
- Page: https://openairdocs.org/proposed/FAA-2006-24076

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain EMBRAER Model EMB-120, -120ER, -120FC, -120QC, and -120RT airplanes. This proposed AD would require replacing the shut-off and crossbleed valves of the bleed air system with new valves having hermetically sealed switches. This proposed AD results from fuel system reviews conducted by the manufacturer. We are proposing this AD to prevent a potential source of ignition near a fuel tank, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.

## Notices in this docket

- Mar 7, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document 06-2158, comments due Apr 6, 2006 (https://www.federalregister.gov/documents/2006/03/07/06-2158/airworthiness-directives-empresa-brasileira-del-aeronautica-sa-embraer-model-emb-120--120er--120fc)

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