AD 97-21-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Short Brothers PLC | SD3-30 | Airworthiness Directives; Short Brothers Model SD3-30 Series Airplanes |
Unsafe Condition
The depth of the skin flutes of the port and starboard skin panels of the rudder and elevators is less than the design specification, which could result in structural damage and/or loss of the rudder or elevators if operated under ultimate load conditions.
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Required Actions
Conduct a one-time inspection of the skin flutes' depth on the rudder and elevators per Service Bulletin SD330-55-19. If depths exceed limits, repair prior to further flight using an FAA-approved method.
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Compliance Time
Within 90 days of the effective date of this AD
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Affected Aircraft
All Short Brothers Model SD3-30 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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