# Proposed AD FAA-2023-1052: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-17-06
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 31, 2023, 88 FR 34794
- Comments due: July 17, 2023
- Became: [AD 2023-17-06](https://openairdocs.org/ad/2023-17-06)
- Docket: FAA-2023-1052 (https://www.regulations.gov/docket/FAA-2023-1052, where comments are filed)
- Project: MCAI-2023-00260-T
- FR document: 2023-11439
- Official PDF: https://openairdocs.org/files/sha256/d5/bc/d5bc7bdec7320343b7f3b4ecc93d63144ee0a23b5ee8389f42815d15203ad9b2 (from https://www.govinfo.gov/content/pkg/FR-2023-05-31/pdf/2023-11439.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/05/31/2023-11439/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-11439-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1052

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This proposed AD was prompted by an uncommanded flap extension accompanied by a flaps fail caution message during climb. This proposed AD requires initial and repetitive operational tests of the flap control system. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 31, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-11439, comments due Jul 17, 2023 (https://www.federalregister.gov/documents/2023/05/31/2023-11439/airworthiness-directives-bombardier-inc-airplanes)

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