AD 47-30-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | T-50 | Airworthiness Directives; CESSNA Model UC-78 and AT-17 Series Airplanes |
Unsafe Condition
Incorrect identification of 5,700-pound gross weight wings (UC-78 and AT-17 series) could result in certification above 5,100 pounds gross weight, leading to structural failure due to insufficient reinforcement.
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Required Actions
Inspect wings of 5,400- and 5,700-pound gross weight airplanes to verify proper identification as 5,700-pound wings by checking laminated birch plywood reinforcement on rear spar, plywood flanges on wing ribs, and diagonal dimensions in nose ribs. Wings not identifiable must not be certified above 5,100 pounds gross weight.
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Compliance Time
prior to October 15, 1947
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Affected Aircraft
Cessna Model UC-78 and AT-17 Series airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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