AD 83-07-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Short Brothers PLC | SC-7 Skyvan Series 3 | Airworthiness Directives; Short Model SC-7 Series 3 Series Airplanes |
Unsafe Condition
Looseness of either vertical fin due to insufficient torque on bolts attaching the fin to the stabilizer.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove access panels T15, T16, and T17; apply 12-15 in-lbs torque to 10-32 UNF bolts (one at a time) on front and rear spars. If bolts rotate during torque application, inspect for elongation, add washers if no elongation, or repair per manufacturer instructions if elongation is found. Replace panels per maintenance manual.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours time-in-service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Short Brothers PLC Model SC-7 Series 3 (all serial numbers)
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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