# Airworthiness Directives; Learjet Inc. Airplanes
> **Rule** · Final rule. · Published 2021-12-06 · Effective 2022-01-10 · 86 FR 68887
## Document
- **Document number:** 2021-26331
- **Category:** airworthiness
- **Manufacturer:** Learjet Inc.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 68887
- **Publication date:** 2021-12-06
- **Effective date:** 2022-01-10
- **FAA docket:** Docket No. FAA-2021-0660
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Learjet Inc. Model 45 airplanes. This AD was prompted by a report of a fuel leak due to a cracked fuel line between the engine fuel control and the engine fuel flow meter. This AD requires replacing the existing fuel flow meter bracket assembly with a redesigned bracket assembly and reporting information to the FAA. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/12/06/2021-26331/airworthiness-directives-learjet-inc-airplanes)
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