AD 46-23-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Univair Aircraft Corporation | 415-C | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
| aircraft | Univair Aircraft Corporation | 415-CD | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
| aircraft | Univair Aircraft Corporation | 415-D | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
Unsafe Condition
Defective fitting on the upper end of the control column shaft (Erco P/N 415-52129) in the aileron control system may cause undue slack or displacement in the system.
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Required Actions
Test the aileron control system to a load of 94 pounds at the control wheel periphery, block ailerons during test, check neutral position before and after test, replace control column if neutral position changes more than 5 degrees, and ensure system operates freely after testing. Logbook entry required.
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Compliance Time
To be accomplished immediately.
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Affected Aircraft
ERCO Model 415-C, -CD, and -D aircraft with serial numbers 113 to 1306, inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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