AD 96-21-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Short Brothers PLC | SD3-30 | Airworthiness Directives; Short Brothers Model SD3-30 and SD3-SHERPA Series Airplanes |
| aircraft | Short Brothers PLC | SD3-SHERPA | Airworthiness Directives; Short Brothers Model SD3-30 and SD3-SHERPA Series Airplanes |
Unsafe Condition
Loose bolts in the vertical fin-to-tailplane joint and pulled or loose rivets in the upper shear angle could reduce structural integrity of the vertical fin to tailplane joint.
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Required Actions
Inspect vertical fin-to-tailplane joint for loose bolts and upper shear angle for loose or pulled rivets within 60 days after the effective date. If loose bolts or rivets are found, inspect for wear, distortion, or hole elongation, and replace bolts, nuts, washers, or shear angles as needed. Repeat inspections at intervals not exceeding 1,500 flight hours if no issues found.
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Compliance Time
Within 60 days after the effective date of this AD
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Affected Aircraft
Short Brothers Model SD3-30 and SD3-SHERPA series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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