AD 48-38-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rogers, Burl A. | 15AC | Airworthiness Directives; Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Aircraft |
| aircraft | Rogers, Burl A. | S15AC | Airworthiness Directives; Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Aircraft |
Unsafe Condition
The present oil cooler installed on the suction side of the engine oil pump may cause possible loss of engine oil pressure and subsequent engine damage during cold weather starting.
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Required Actions
Revise and install the oil cooler on the pressure side of the pump, install an oil cooler adapter assembly with Continental Motors Corp. Drawings 530536 and 530697, replace the pressure oil screen, install a new suction oil screen (P/N A20878), replace the oil cooler bypass spring with a 35 p.s.i. spring, and replumb the oil cooler with different fittings and line arrangement.
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Compliance Time
before operation at temperatures below freezing, but in any case not later than December 1, 1948
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Affected Aircraft
Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Inclusive
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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