AD 98-20-39
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-10 | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-15 | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-20 | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-25 | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-26 | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-26A | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-30 | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-35 | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-36 | Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes |
Unsafe Condition
The wing tip tank may separate from the airplane because of an incorrect bolt corroding, which could result in loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect each forward attachment fitting bolt of the wing tip tanks to determine if any incorrect bolt is installed. Replace any incorrect bolt with P/N 017A-12887-5 or P/N 017A-12887-7 bolts prior to further flight. Identify P/N 017A-12887 or P/N 017A-12887-3 bolts with the letters 'SPL'.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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