AD 64-17-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Revo, Incorporated | Lake LA-4 | Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft |
| aircraft | Revo, Incorporated | Lake LA-4A | Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft |
| aircraft | Revo, Incorporated | Lake LA-4P | Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft |
Unsafe Condition
Complete breather blockage and subsequent loss of engine oil due to icing.
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Required Actions
Rework the uppermost (-37) elbow on the oil breather separator container by locating a 3/8 inch x 3/32 inch whistle slot 3/4 inch from the top of the breather container in accordance with Consolidated Aeronautics, Inc. Engineering Order No. 2-657 dated March 2, 1964.
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Compliance Time
prior to September 15, 1964
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Affected Aircraft
Revo, Incorporated Models Lake LA-4, Lake LA-4A, and Lake LA-4P Aircraft
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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