# Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes
> **Rule** · Final rule. · Published 2024-12-09 · Effective 2025-01-13 · 89 FR 97497
## Document
- **Document number:** 2024-28785
- **Category:** airworthiness
- **Manufacturer:** Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 89 FR 97497
- **Publication date:** 2024-12-09
- **Effective date:** 2025-01-13
- **FAA docket:** Docket No. FAA-2024-0468
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This AD was prompted by multiple occurrences of pilot and co-pilot seats locking in a fore-aft position due to the seat fore- aft adjustment mechanism disconnecting, caused by a broken cotter pin in the seat base egress linkage. This AD requires modifying the pilot and co-pilot seats by replacing the hardware of the seat base egress linkage, as specified in a Transport Canada AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/12/09/2024-28785/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)
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