# Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes
> **Rule** · Final rule. · Published 2021-06-24 · Effective 2021-07-29 · 86 FR 33099
## Document
- **Document number:** 2021-13114
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 33099
- **Publication date:** 2021-06-24
- **Effective date:** 2021-07-29
- **FAA docket:** Docket No. FAA-2021-0023
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Saab AB, Support and Services Model SAAB 2000 airplanes. This AD was prompted by a report indicating that the left-hand main landing gear (MLG) collapsed after touchdown, causing severe damage to the airplane. This AD requires modifying the MLG hydraulic transfer valve, as specified in a European Union Aviation Safety Agency (EASA) 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/2021/06/24/2021-13114/airworthiness-directives-saab-ab-support-and-services-formerly-known-as-saab-ab-saab-aeronautics)
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