# Proposed AD FAA-2008-0271: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and - 145EP Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-01-05
- Products: Embraer
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 13, 2008, 73 FR 13501
- Comments due: April 14, 2008
- Became: [AD 2009-01-05](https://openairdocs.org/ad/2009-01-05)
- Docket: FAA-2008-0271 (https://www.regulations.gov/docket/FAA-2008-0271, where comments are filed)
- Project: 2007-NM-267-AD
- FR document: E8-4995
- Official PDF: https://openairdocs.org/files/sha256/72/43/724310905a54417de05890d94d800dbe7303dd2b3d7d1649160ebb1987a1fddf (from https://www.govinfo.gov/content/pkg/FR-2008-03-13/pdf/E8-4995.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/03/13/E8-4995/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-145--145er--145mr
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B4FB9F53A3CEE1AF8625740B005FBDFC.0001
- Page: https://openairdocs.org/proposed/FAA-2008-0271

## 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:

Embraer has issued the Service Bulletin (SB) No. 145-00-0032 to provide instructions to modify the EMB-145 ( ) aircraft and allow operation with an increased Maximum Takeoff Weight (MTOW). Reassessment of the Damage Tolerance Analysis during development of the SB resulted in changes to the Airworthiness Limitation Items (ALI) for those modified aircraft to include new tasks and to revise some existing ones and its respective intervals. Failure to inspect some structural components, according to the new tasks and intervals for those modified aircraft, could prevent a timely detection of fatigue cracking. Undetected fatigue cracking in these components could adversely affect the structural integrity of these airplanes. * * * * * The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Mar 13, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-4995, comments due Apr 14, 2008 (https://www.federalregister.gov/documents/2008/03/13/E8-4995/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-145--145er--145mr)

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