AD 74-23-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | American Champion Aircraft Corp. | 8KCAB | Airworthiness Directives; Bellanca Model 8KCAB Aircraft |
Unsafe Condition
Fatigue cracks and/or distortion of rib flanges on Bellanca Model 8KCAB aircraft wing ribs could lead to wing structural failure.
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Required Actions
Visually inspect wing ribs for fatigue cracks and/or distortion by removing fabric from four reinforcing rings, using a flashlight and mirror. If cracks, distortion, or rivet looseness are found, repair and reinforce all 30 ribs per Bellanca Kit No. 243 or equivalent approved repair. If no issues found, repeat inspection every 25 flight hours.
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Compliance Time
before further flight
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Affected Aircraft
Bellanca Model 8KCAB aircraft serial numbers 4-71 through 159-74
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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