AD 47-47-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sky Enterprises, Inc. | RC-3 | Airworthiness Directives; Republic Model RC-3 Aircraft |
Unsafe Condition
The Hartzell propeller hub counterweight length and position may not be correctly designated, leading to potential improper operation or failure of the reverse thrust system.
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Required Actions
Determine the counterweight length and position to amend the hub designation as specified. Add suffix letters 'C' or 'A' based on counterweight dimensions. Affix 1/8-inch slugs to plain 4.50-inch counterweights. Revise reverse thrust operation placards with specific warnings based on engine serial numbers and propeller models.
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Compliance Time
not later than next 100-hour inspection or January 15, 1948
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Affected Aircraft
Republic Model RC-3 Aircraft with Hartzell propeller hub model HC-12X20-3
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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