KENTON, DE, USA
N14336
BOEING 737-300
A FLAMEOUT OF THE #1 ENGINE OCCURRED DUE TO WATER INGESTION WHEN THE AIRCRAFT PENETRATED A VIP LEVEL 5 THUNDERSTORM AND ENCOUNTERED HEAVY RAIN WHILE DESCENDING WITH THE THROTTLES A FLIGHT IDLE. THE ENGINE SUFFERED OVERTEMPERATURE DAMAGE TO THE TURBINE SECTION DURING THE SUBSEQUENT WINDMILLING START. THE CAPTAIN ELECTED TO DESCEND IN PRECIPITATION WITH THE ENGINES AT IDLE, DESPITE THE COPILOT'S WARNING THAT IDLE DESCENT WAS CONTRARY TO RECENTLY PUBLISHED PROCEDURES WHICH REQUIRED MAINTAINING A MINIMUM OF 45% N1 RPM. THE PRECIPITATION INDUCED FLAMEOUT PHENOMENA HAD BEEN IDENTIFIED IN PREVIOUS INCIDENTS, AND CORRECTIVE PROCEDURES WERE ISSUED BY THE FAA, THE MANUFACTURERS, AND THE CARRIER, PRIOR TO THIS OCCURRENCE.
Source: NTSB Aviation Accident Database
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