# Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
> **Rule** · Final rule. · Published 2022-06-03 · Effective 2022-07-08 · 87 FR 33627
## Document
- **Document number:** 2022-11758
- **Category:** airworthiness
- **Manufacturer:** De Havilland
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 33627
- **Publication date:** 2022-06-03
- **Effective date:** 2022-07-08
- **FAA docket:** Docket No. FAA-2022-0143
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited (type certificate previously held by Bombardier, Inc.) Model DHC-8-401 and -402 airplanes. This AD was prompted by reports of a certain bolt at the pivot pin link being found missing or having stress corrosion cracking. This AD requires a modification to the nose landing gear (NLG) shock strut assembly. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/06/03/2022-11758/airworthiness-directives-de-havilland-aircraft-of-canada-limited-type-certificate-previously-held-by)
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