# Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
> **Rule** · Final rule. · Published 2024-05-16 · Effective 2024-06-20 · 89 FR 42792
## Document
- **Document number:** 2024-08577
- **Category:** airworthiness
- **Manufacturer:** De Havilland
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 89 FR 42792
- **Publication date:** 2024-05-16
- **Effective date:** 2024-06-20
- **FAA docket:** Docket No. FAA-2023-2137
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all De Havilland Aircraft of Canada Limited Model DHC-8-401 and -402 airplanes. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/05/16/2024-08577/airworthiness-directives-de-havilland-aircraft-of-canada-limited-type-certificate-previously-held-by)
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