AD 71-20-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | American Champion Aircraft Corp. | 7ECA | Airworthiness Directives; Champion Model 7ECA, 7GCAA, 7GCBC and 7KCAB Airplanes |
| aircraft | American Champion Aircraft Corp. | 7GCAA | Airworthiness Directives; Champion Model 7ECA, 7GCAA, 7GCBC and 7KCAB Airplanes |
| aircraft | American Champion Aircraft Corp. | 7GCBC | Airworthiness Directives; Champion Model 7ECA, 7GCAA, 7GCBC and 7KCAB Airplanes |
| aircraft | American Champion Aircraft Corp. | 7KCAB | Airworthiness Directives; Champion Model 7ECA, 7GCAA, 7GCBC and 7KCAB Airplanes |
Unsafe Condition
Structural failure of the lower fuselage longerons due to non-compliance with radius criteria specified in Champion Service Letter No. 96.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours' time in service after the effective date, visually inspect the lower fuselage longerons per Champion Service Letter No. 96. If they do not meet the radius criteria, install Champion Service Kit 233 or an equivalent modification approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 50 hours' time in service after the effective date of this AD
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Affected Aircraft
American Champion Aircraft Corp. Models 7ECA (specific serial numbers listed in the AD), 7GCAA (specific serial numbers listed in the AD), 7GCBC (specific serial numbers listed in the AD), and 7KCAB (specific serial numbers listed in the AD) airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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