# Airworthiness Directives; Bombardier, Inc., Airplanes
> **Rule** · Final rule. · Published 2022-01-11 · Effective 2022-02-15 · 87 FR 1352
## Document
- **Document number:** 2021-28597
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 1352
- **Publication date:** 2022-01-11
- **Effective date:** 2022-02-15
- **FAA docket:** Docket No. FAA-2021-0658
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This AD was prompted by a discovery that a lockwire may not have been installed on the side stay actuator pin nut of the main landing gear (MLG). This AD requires inspecting the left-hand and right-hand MLG side stay actuator assembly pin nut for the presence of a lockwire, and installing a lockwire if necessary. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/01/11/2021-28597/airworthiness-directives-bombardier-inc-airplanes)
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