# Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Airplanes
> **Rule** · Final rule. · Published 2020-12-29 · Effective 2021-02-02 · 85 FR 85506
## Document
- **Document number:** 2020-28855
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 85506
- **Publication date:** 2020-12-29
- **Effective date:** 2021-02-02
- **FAA docket:** Docket No. FAA-2020-0781
## Abstract

The FAA is superseding Airworthiness Directive (AD) 75-16-20, which applied to all Mitsubishi Heavy Industries, Ltd., Model MU-2B, MU-2B-10, MU-2B-15, MU-2B-20, MU-2B-25, MU-2B-26, MU-2B-30, MU-2B-35, and MU-2B-36 airplanes. AD 75-16-20 required repetitive inspections of the propeller pitch control (PPC) lever for security and proper rigging. This AD requires modification and repetitive inspections of the PPC lever linkage. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/12/29/2020-28855/airworthiness-directives-mitsubishi-heavy-industries-ltd-airplanes)
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