# Proposed AD FAA-2017-0691: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-20-11
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 17, 2017, 82 FR 32652
- Comments due: August 31, 2017
- Became: [AD 2017-20-11](https://openairdocs.org/ad/2017-20-11)
- Docket: FAA-2017-0691 (https://www.regulations.gov/docket/FAA-2017-0691, where comments are filed)
- Project: 2017-NM-029-AD
- FR document: 2017-14593
- Official PDF: https://openairdocs.org/files/sha256/94/5a/945a9325734cbb1d6d12e16ede2903a22504e783cbff73c13c09866a274ede0c (from https://www.govinfo.gov/content/pkg/FR-2017-07-17/pdf/2017-14593.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/07/17/2017-14593/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/14FE51C3B07C9DF086258160004E202F.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0691

## 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 Variant), and CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes. This proposed AD was prompted by a report of laminated shims that may have been improperly installed at a certain wing tie beam. This proposed AD would require revising the maintenance or inspection program to incorporate certification maintenance requirement tasks that introduce revised checks of the tie beam. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 17, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-14593, comments due Aug 31, 2017 (https://www.federalregister.gov/documents/2017/07/17/2017-14593/airworthiness-directives-bombardier-inc-airplanes)

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