AD 77-24-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Short Brothers PLC | SC-7 Skyvan Series 3 | Airworthiness Directives; Short Brothers and Harland Model SC 7 Series 3 Airplanes |
Unsafe Condition
Cracks and evidence of chafing and inadequate clearances in the flap mechanism support structure could lead to failure of the structure.
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Required Actions
Visually inspect the flap mechanism support structure using a 10 power magnifying glass for cracking and evidence of chafing and inadequate clearances in accordance with Shorts Alert Service Bulletin No. 27-A64, Revision 3. If cracks are within acceptable limits, reinspect daily. If cracks exceed limits, replace parts or comply with paragraph (b). If chafing or inadequate clearances are found, rework as per Figure 3 of the service bulletin.
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Compliance Time
Before the accumulation of 5,000 landings or within 10 hours time in service after the effective date of this AD, whichever occurs later
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Affected Aircraft
Short Brothers and Harland Model SC 7 Series 3 airplanes except those modified in accordance with Shorts Modification No. 1658.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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