# Airworthiness Directives; Bombardier, Inc., Airplanes
> **Rule** · Final rule. · Published 2026-07-14 · Effective 2026-08-18 · 91 FR 43025
## Document
- **Document number:** 2026-14110
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 91 FR 43025
- **Publication date:** 2026-07-14
- **Effective date:** 2026-08-18
- **FAA docket:** Docket No. FAA-2025-3435
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2025-17- 12, which applied to all Bombardier, Inc., Model CL-600-1A11 (600) and CL-600-2A12 (601) airplanes and certain Model CL-600-2B16 (601-3A, 601- 3R, and 604 Variants) airplanes. AD 2025-17-12 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2025-17-12, the FAA has determined that certain serial numbers for affected Model CL-600-2B16 (604 Variants) airplanes are not included in the applicability of AD 2025-17-12. This AD continues to require the actions specified in AD 2025-17-12 and adds airplanes to the applicability. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/07/14/2026-14110/airworthiness-directives-bombardier-inc-airplanes)
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