Narrative:

Shortly after setting cruise thrust at FL370, fuel xfeed from tanks #2 and 3 was initiated. At that time attention was drawn to the #3 aft fuel boost pump, which had been blinking erratically since early in the climb out. Almost immediately both #4 fuel flow indicators began spiking full scale, and the #4 engine began spooling down. In-flight ignition was immediately selected, and fuel pressure assured with all fuel boost pumps on. During re-ignition the #4 egt began a rapid rise, and so the start level was placed to shut off. The engine fuel valve was confirmed closed and a clean shutdown observed the engine failure checklist was then read and a review of the handbook was made. After turning back towards sfo and leveling at FL290 the in-flight start checklist was accomplished successfully. Fuel heat was then applied to assist in dissipating possible fuel contamination. Sfo station maintenance examined the fuel tank sumps and notified us that about a cup of water had been discovered remaining in the #3 fuel tank sump. The maintenance reliability report attributed the cause to suspected water contamination of fuel.

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Original NASA ASRS Text

Title: ACR WDB INFLT ENGINE SHUTDOWN.

Narrative: SHORTLY AFTER SETTING CRUISE THRUST AT FL370, FUEL XFEED FROM TANKS #2 AND 3 WAS INITIATED. AT THAT TIME ATTN WAS DRAWN TO THE #3 AFT FUEL BOOST PUMP, WHICH HAD BEEN BLINKING ERRATICALLY SINCE EARLY IN THE CLBOUT. ALMOST IMMEDIATELY BOTH #4 FUEL FLOW INDICATORS BEGAN SPIKING FULL SCALE, AND THE #4 ENG BEGAN SPOOLING DOWN. INFLT IGNITION WAS IMMEDIATELY SELECTED, AND FUEL PRESSURE ASSURED WITH ALL FUEL BOOST PUMPS ON. DURING RE-IGNITION THE #4 EGT BEGAN A RAPID RISE, AND SO THE START LEVEL WAS PLACED TO SHUT OFF. THE ENG FUEL VALVE WAS CONFIRMED CLOSED AND A CLEAN SHUTDOWN OBSERVED THE ENG FAILURE CHKLIST WAS THEN READ AND A REVIEW OF THE HANDBOOK WAS MADE. AFTER TURNING BACK TOWARDS SFO AND LEVELING AT FL290 THE INFLT START CHKLIST WAS ACCOMPLISHED SUCCESSFULLY. FUEL HEAT WAS THEN APPLIED TO ASSIST IN DISSIPATING POSSIBLE FUEL CONTAMINATION. SFO STATION MAINT EXAMINED THE FUEL TANK SUMPS AND NOTIFIED US THAT ABOUT A CUP OF WATER HAD BEEN DISCOVERED REMAINING IN THE #3 FUEL TANK SUMP. THE MAINT RELIABILITY RPT ATTRIBUTED THE CAUSE TO SUSPECTED WATER CONTAMINATION OF FUEL.

Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.