# Proposed AD FAA-2012-0725: Bombardier, Inc.

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-03-08
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 31, 2012, 77 FR 45288
- Comments due: September 14, 2012
- Became: [AD 2013-03-08](https://openairdocs.org/ad/2013-03-08)
- Docket: FAA-2012-0725 (https://www.regulations.gov/docket/FAA-2012-0725, where comments are filed)
- Project: 2011-NM-207-AD
- FR document: 2012-18585
- Official PDF: https://openairdocs.org/files/sha256/fe/99/fe99991948abcca0142fbdb6348414a9931c8b08114e2037c3bd501616d8ad4d (from https://www.govinfo.gov/content/pkg/FR-2012-07-31/pdf/2012-18585.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/07/31/2012-18585/airworthiness-directives-bombardier-inc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1DB2312DA2E7508C86257A4C00469DE7.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0725

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-1A11 (CL-600), CL-600-2A12 (CL- 601), CL-600-2B16 (CL-601-3A, CL-601-3R, & CL-604 Variants) airplanes. This proposed AD was prompted by reports of cracking found on the upper and lower web of the engine support beam. This proposed AD would require revising the maintenance program. We are proposing this AD to detect and correct fatigue cracking of the engine support beam, which could result in failure of the engine support beam and affect the structural integrity of the airplane.

## Notices in this docket

- Jul 31, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-18585, comments due Sep 14, 2012 (https://www.federalregister.gov/documents/2012/07/31/2012-18585/airworthiness-directives-bombardier-inc)

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