# Proposed AD 97-CE-21-AD: Mitsubishi Heavy Industries, Ltd. Models MU-2B Series Airplanes; Notice of Public Meeting

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-09-15
- Action: Notice of public meeting; reopening of the comment period.
- Published: September 29, 1998, 63 FR 51865
- Became: [AD 2000-09-15](https://openairdocs.org/ad/2000-09-15)
- Docket: 97-CE-21-AD
- FR document: 98-25954
- Official PDF: https://openairdocs.org/files/sha256/1c/c3/1cc3c21ad6a9c84642db0614a356c977e0e0808ad489f0065487d6feead0f6ff (from https://www.govinfo.gov/content/pkg/FR-1998-09-29/pdf/98-25954.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/09/29/98-25954/airworthiness-directives-mitsubishi-heavy-industries-ltd-models-mu-2b-series-airplanes-notice-of
- Page: https://openairdocs.org/proposed/97-CE-21-AD

## Summary

This notice reopens the comment period and announces a public meeting on the subject proposed airworthiness directive (AD) that would apply to certain Mitsubishi Heavy Industries, Ltd. (Mitsubishi) MU-2B series airplanes. The proposed AD would require incorporating several modifications to the operating systems and installing a placard with operating limitations within the pilot's clear view. The purpose of the meeting is to discuss technical issues related to the FAA's determination that AD action should be taken to prevent departure from controlled flight and to assist the pilot in detecting ice accumulation on the airplane when flying in icing conditions that exceed the airplane's ice protection capability, which could result in possible loss of control of the airplane. The comment period is being reopened to facilitate collection and consideration of data concerning these technical issues.

## Notices in this docket

- May 21, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-13517, comments due Jul 22, 1998 (https://www.federalregister.gov/documents/1998/05/21/98-13517/airworthiness-directives-mitsubishi-heavy-industries-ltd-models-mu-2b-series-airplanes)
- Sep 29, 1998: Notice of public meeting; reopening of the comment period., FR document 98-25954 (https://www.federalregister.gov/documents/1998/09/29/98-25954/airworthiness-directives-mitsubishi-heavy-industries-ltd-models-mu-2b-series-airplanes-notice-of)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.