What was found
THE PILOT HEARD A LOUD BANG FOLLOWED BY A YAW LEFT AND ENGINE RELIGHT. DEFECTIVE WATER ALCOHOL SYSTEM SOLENOID VALVE, P/N 15429. PERFORMED ENGINE COMPRESSOR INSPECTION. REPLACED FUEL CONTROL, GOVERNOR, BLEED VALVE, FUEL NOZZLE, THEN REPLACED SOLENOID VALVE. THE DEFECTIVE WATER ALCOHOL VALVE CAUSED A SMALL AMOUNT OF WATER ALCOHOL FLUID TO ENTER THE COMPRESSOR INLET. NYH BELIEVES THAT THE WATER FROZE AND WAS INGESTED INTO THE ENGINE.