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N4305Y accident description

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Crash location Unknown
Nearest city Concord, CA
37.977978°N, 122.031073°W
Tail number N4305Y
Accident date 02 Sep 1992
Aircraft type Piper PA-23-160
Additional details: None

NTSB Probable Cause

The following Probable Cause was modified on April18, 2007, as a result of new information provided to the NTSB.

THE IMPROPER INSTALLATION OF THE 1.75 INCH OD PLUG IN THE CRANKSHAFT BY UNKNOWN MAINTENANCE PERSONNEL WHICH RESULTED IN AN INADVERTENT FEATHERING OF THE LEFT ENGINE PROPELLER.

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