AD 80-04-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-36 | Airworthiness Directives; Mitsubishi Model MU-2B-36, MU-2B-36A, and MU-2B-60 Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-36A | Airworthiness Directives; Mitsubishi Model MU-2B-36, MU-2B-36A, and MU-2B-60 Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | MU-2B-60 | Airworthiness Directives; Mitsubishi Model MU-2B-36, MU-2B-36A, and MU-2B-60 Series Airplanes |
Unsafe Condition
The avionic equipment mounting shelf may not provide a reliable attitude reference, which could result in loss of eligibility for IFR operation.
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Required Actions
Install an improved avionic equipment mounting shelf per Mitsubishi Service Note No. 062 or Service Bulletin SB015/53-001. If not installed within 25 flight hours, limit operations to day VFR and install a placard stating 'OPERATIONS LIMITED TO DAY VFR' with 1/4 inch letters on the instrument panel.
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Compliance Time
within the next 25 hours of flight time after the effective date of this AD
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Affected Aircraft
Mitsubishi Model MU-2B-36 (serial numbers 675, 681, 684, 687, 688, 691, 695); MU-2B-36A and MU-2B-60 (serial numbers 697SA, 699SA, 701SA, 706SA, 708SA, 709SA, 711SA, 713SA, 714SA, 719SA, 720SA, 721SA, 723SA, 725SA, 727SA, 729SA through 736SA, 738SA through 747SA, 749SA through 757SA, 759SA, 761SA, 763SA, 765SA)
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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