AD 50-04-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Superior Aircraft Company | V | Airworthiness Directives; SUPERIOR (Culver) Model V, Serial V-3 Through V-357 and Model V2, Serial V2-503 Through V2-517 |
| aircraft | Superior Aircraft Company | V-2 | Airworthiness Directives; SUPERIOR (Culver) Model V, Serial V-3 Through V-357 and Model V2, Serial V2-503 Through V2-517 |
Unsafe Condition
The teeth of the final pinion, P/N 10528, in the gear reduction train of the landing gear retraction motor have inadequate strength to sustain shock loads from abrupt reversal of the landing gear retraction switch and maladjusted limit switches, rendering the emergency extension system inoperative.
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Required Actions
Replace gears 10528 and 10529 with gears 11520 and 11521, which have stronger teeth. Obtain the replacement gears from Superior Aircraft Co., University Airport, 2501 North Hillside, Wichita 25, Kansas.
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Compliance Time
at the next 100-hour inspection but not later than February 1, 1951
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Affected Aircraft
Superior (Culver) Model V, Serial V-3 Through V-357 and Model V2, Serial V2-503 Through V2-517 not previously modified per Superior Service Bulletin No. 18
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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