AD 90-15-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11 | Airworthiness Directives; MITSUBISHI Model YS-11 and YS-11A Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11A-200 | Airworthiness Directives; MITSUBISHI Model YS-11 and YS-11A Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11A-300 | Airworthiness Directives; MITSUBISHI Model YS-11 and YS-11A Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11A-500 | Airworthiness Directives; MITSUBISHI Model YS-11 and YS-11A Series Airplanes |
| aircraft | Mitsubishi Heavy Industries, Ltd. | YS-11A-600 | Airworthiness Directives; MITSUBISHI Model YS-11 and YS-11A Series Airplanes |
Unsafe Condition
Propeller high stop withdrawal relay abnormalities could cause propellers to fail to withdraw.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 1,000 flight hours after the AD's effective date, inspect the propeller high stop withdrawal relay per Service Bulletin 61-5 and replace if abnormality detected. Install Decal 01-81717-27 per Service Bulletin 15-27. Repeat inspections every 3,000 flight hours after initial or replacement. Special flight permits may be issued under FAR 21.197/199 to operate to a base for compliance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 1,000 flight hours after the effective date of this AD, and repeat inspections at intervals not to exceed 3,000 flight hours after initial inspection or replacement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Mitsubishi Heavy Industries, Ltd. Model YS-11 and YS-11A series airplanes, certificated in any category.
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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