# Proposed AD FAA-2005-22871: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120, -120ER, -120FC, -120QC, and -120RT Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-02-02
- Products: Embraer
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 9, 2005, 70 FR 67948
- Comments due: December 9, 2005
- Became: [AD 2006-02-02](https://openairdocs.org/ad/2006-02-02)
- Docket: FAA-2005-22871 (https://www.regulations.gov/docket/FAA-2005-22871, where comments are filed)
- Project: 2005-NM-191-AD
- FR document: 05-22304
- Official PDF: https://openairdocs.org/files/sha256/85/3c/853c66dd06083be31e0af836ea664dc947884da169bda0e8653c78755a2df723 (from https://www.govinfo.gov/content/pkg/FR-2005-11-09/pdf/05-22304.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/11/09/05-22304/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-120--120er--120fc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/55A9772D279A3F5B862570B400618CF0.0001
- Page: https://openairdocs.org/proposed/FAA-2005-22871

## 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 installing a rivet and washer in the hole of the upper frame of the auxiliary power unit (APU) firewall. This proposed AD results from a report indicating that, during production, a pinhole was left open at the upper frame of the APU firewall. We are proposing this AD to ensure that the APU compartment is isolated from the rest of the airplane in the event of an APU fire.

## Notices in this docket

- Nov 9, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-22304, comments due Dec 9, 2005 (https://www.federalregister.gov/documents/2005/11/09/05-22304/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-120--120er--120fc)

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