AD 72-18-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | American Champion Aircraft Corp. | 7GCAA | Airworthiness Directives; Bellanca (Champion) Model 7GCAA, 7GCBC, 7KCAB, and 8KCAB Airplanes |
| aircraft | American Champion Aircraft Corp. | 7GCBC | Airworthiness Directives; Bellanca (Champion) Model 7GCAA, 7GCBC, 7KCAB, and 8KCAB Airplanes |
| aircraft | American Champion Aircraft Corp. | 7KCAB | Airworthiness Directives; Bellanca (Champion) Model 7GCAA, 7GCBC, 7KCAB, and 8KCAB Airplanes |
| aircraft | American Champion Aircraft Corp. | 8KCAB | Airworthiness Directives; Bellanca (Champion) Model 7GCAA, 7GCBC, 7KCAB, and 8KCAB Airplanes |
Unsafe Condition
Corrosion of rudder and elevator cables caused by battery acid spillage in the battery area.
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Required Actions
Inspect elevator and rudder control cables in the battery area for corrosion caused by battery acid spillage. Replace corroded cables before further flight. Inspect battery compartment area for corrosion of airframe components, neutralize affected areas with soda water solution, and repair damage as necessary. Install a battery box draining acid spillage overboard by March 1, 1973, to discontinue repetitive inspections.
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Compliance Time
Within the next 10 hours time in service after the effective date (September 1, 1972), unless already accomplished within the last 15 hours time in service, and thereafter at intervals not to exceed 25 hours time in service from the last inspection. Battery box installation required no later than March 1, 1973.
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Affected Aircraft
Bellanca (Champion) Models 7GCAA, 7GCBC, 7KCAB, and 8KCAB airplanes certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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