# Proposed AD FAA-2011-1325: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-07-08
- Products: Embraer - Empresa Brasileira de Aeronautica
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 29, 2011, 76 FR 81894
- Comments due: February 13, 2012
- Became: [AD 2012-07-08](https://openairdocs.org/ad/2012-07-08)
- Docket: FAA-2011-1325 (https://www.regulations.gov/docket/FAA-2011-1325, where comments are filed)
- Project: 2010-NM-250-AD
- FR document: 2011-33279
- Official PDF: https://openairdocs.org/files/sha256/26/95/26958e269d0927a22dba5307407e505b2e360842940c136c605c2dbfc1ae3066 (from https://www.govinfo.gov/content/pkg/FR-2011-12-29/pdf/2011-33279.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/12/29/2011-33279/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B00821B133F25C968625797500541299.0001
- Page: https://openairdocs.org/proposed/FAA-2011-1325

## Summary

We propose to supersede an existing airworthiness directive (AD) that applies to all EMBRAER Model ERJ 170 airplanes. The existing AD currently requires revising the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness (ICA) to incorporate new structural inspection requirements. Since we issued that AD, during full scale fatigue testing, cracks were found in certain structural components of the airplane. Analysis of these cracks resulted in manufacturer modifications of the ALS of Embraer ERJ 170 Maintenance Review Board Report (MRBR), which include new inspections tasks, or modification of the current tasks and their respective thresholds and intervals. This proposed AD would revise the maintenance program to incorporate new or revised structural inspection requirements. We are proposing this AD to detect and correct fatigue cracking which could result in the loss of structural integrity of the airplane.

## Notices in this docket

- Dec 29, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-33279, comments due Feb 13, 2012 (https://www.federalregister.gov/documents/2011/12/29/2011-33279/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.