# Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes
> **Rule** · Final rule. · Published 2000-05-15 · Effective 2000-07-24 · 65 FR 30865
## Document
- **Document number:** 00-11863
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 65 FR 30865
- **Publication date:** 2000-05-15
- **Effective date:** 2000-07-24
- **FAA docket:** Docket No. 97-CE-21-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that applies to all Mitsubishi Heavy Industries, Ltd. (Mitsubishi) MU-2B series airplanes. This AD requires modifying the airplanes' operating systems. This AD results from several icing-related incidents and accidents of MU-2B series airplanes, and the Federal Aviation Administration's investigation of the airplane design and pilot's ability to operate in icing conditions. The actions specified by this AD are intended to assist in preventing departure from controlled flight while operating in icing conditions.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/05/15/00-11863/airworthiness-directives-mitsubishi-heavy-industries-ltd-mu-2b-series-airplanes)
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