AD 56-18-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kelowna Flightcraft R & D Ltd. | 340 | CONVAIR Model 340 Aircraft |
Unsafe Condition
Engines installed in Convair 340 airplanes may experience excessive oil temperatures and inability to scavenge the crankcase during hot weather operations due to high oil flow rates.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Comply with Pratt & Whitney Service Bulletins Nos. 1513 and 1524, or adopt maintenance practices and engine overhaul procedures that effectively reduce oil flow rates.
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Compliance Time
Preferably at next engine overhaul but not later than June 1, 1957.
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Affected Aircraft
Convair Model 340 Aircraft, all serial numbers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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