Transportation Department Docket FAA-2016-9139 Proposed Rule

2016-22182: Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Airplanes

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Summary

We propose to adopt a new airworthiness directive (AD) for certain Mitsubishi Heavy Industries, Ltd. Models MU-2B-10, MU-2B-15, MU-2B-20, MU-2B-25, MU-2B-26, MU-2B-26A, MU-2B-30, MU-2B-35, MU-2B-36, MU-2B-36A, MU-2B-40, and MU-2B-60 airplanes. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as reports of cracks found in the wing spacer plates. We are issuing this proposed AD to require actions to detect and correct cracks in the wing spacer plates, which could result in reduced structural integrity of the wings and loss of control.

The agency’s own summary, as published.

What this changes

Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.

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