# Proposed AD FAA-2021-0787: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-10-10
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 15, 2021, 86 FR 51279
- Comments due: November 1, 2021
- Became: [AD 2022-10-10](https://openairdocs.org/ad/2022-10-10)
- Docket: FAA-2021-0787 (https://www.regulations.gov/docket/FAA-2021-0787, where comments are filed)
- Project: MCAI-2021-00252-T
- FR document: 2021-19814
- Official PDF: https://openairdocs.org/files/sha256/e0/ae/e0aec33ae4f4209cc38e80ce3f5fb14cc6eba215fec255621f09fbfa1cbe4d9c (from https://www.govinfo.gov/content/pkg/FR-2021-09-15/pdf/2021-19814.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/09/15/2021-19814/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/139C2BFB41FB7066862587510066C4FA.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0787

## 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 a report of a wing stall (wing drop/ un-commanded roll) during a landing flare. This proposed AD would require revising the existing airplane flight manual (AFM) to incorporate a limitation and procedure for the wing anti-ice (WAI) system in order to mitigate the risk of ice accumulation on the wing leading edges. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 15, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-19814, comments due Nov 1, 2021 (https://www.federalregister.gov/documents/2021/09/15/2021-19814/airworthiness-directives-bombardier-inc-airplanes)

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