AD 75-17-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | American Champion Aircraft Corp. | 7ECA | Airworthiness Directives; Bellanca Models 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC Airplanes |
| aircraft | American Champion Aircraft Corp. | 7GCAA | Airworthiness Directives; Bellanca Models 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC Airplanes |
| aircraft | American Champion Aircraft Corp. | 7GCBC | Airworthiness Directives; Bellanca Models 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC Airplanes |
| aircraft | American Champion Aircraft Corp. | 7KCAB | Airworthiness Directives; Bellanca Models 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC Airplanes |
| aircraft | American Champion Aircraft Corp. | 8GCBC | Airworthiness Directives; Bellanca Models 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC Airplanes |
| aircraft | American Champion Aircraft Corp. | 8KCAB | Airworthiness Directives; Bellanca Models 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC Airplanes |
Unsafe Condition
Engine power loss due to fatigue failure of the carburetor alternate air valves.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install Bellanca service kits (No. 248A or 251) within 10 hours time in service after specified dates. Inspect the alternate air valve for cracks at each annual, progressive, or 100-hour inspection and replace if cracks are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 10 hours time in service after the effective date of this AD or June 25, 1975, as specified for each model and serial range.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bellanca Models 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC with specific serial ranges: Models 7ECA (S/N 985-74-1108-75; 723-70-984-73), 7GCAA (S/N 280-74-319-75; 205-70-279-73), 7GCBC (S/N 604-74-859-75; 202-70-603-73), 7KCAB (S/N 405-74-532-75; 209-70-404-73), 8KCAB (S/N 12074-204-75; 4-71-119-73), 8GCBC (S/N 1-74-181-75).
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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