Narrative:

In-flight at FL370; captain was xfeeding with #1 pumps off and realized he had overfed and proceeded to reverse the xfeed. I saw him turn on the #1 pumps; and turn off the #2 pumps. The #2 engine immediately flamed out. I never saw him move the xfeed valve; and thought it was still open. He said he had closed it inadvertently. I talked to ATC and we got a descent to FL240 and declared an emergency. While descending; we began to run QRH procedures for in-flight shutdown and restart. After a few tries; the engine relit using the APU assisted restart. We conferred with dispatch via ACARS; looked at ZZZ1 and the distance was about the same as ZZZ. We believed we had a good engine and with dispatch approval; if all engine indications were normal; we would continue. The rest of the flight was quiet and uneventful.

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Original NASA ASRS Text

Title: A B737 CAPT MISHANDLED FUEL CROSSFEED PROCEDURES AND FLAMED OUT AN ENGINE. THEY WERE ABLE TO RELIGHT AND CONTINUE TO DEST.

Narrative: INFLT AT FL370; CAPT WAS XFEEDING WITH #1 PUMPS OFF AND REALIZED HE HAD OVERFED AND PROCEEDED TO REVERSE THE XFEED. I SAW HIM TURN ON THE #1 PUMPS; AND TURN OFF THE #2 PUMPS. THE #2 ENG IMMEDIATELY FLAMED OUT. I NEVER SAW HIM MOVE THE XFEED VALVE; AND THOUGHT IT WAS STILL OPEN. HE SAID HE HAD CLOSED IT INADVERTENTLY. I TALKED TO ATC AND WE GOT A DSCNT TO FL240 AND DECLARED AN EMER. WHILE DSNDING; WE BEGAN TO RUN QRH PROCS FOR INFLT SHUTDOWN AND RESTART. AFTER A FEW TRIES; THE ENG RELIT USING THE APU ASSISTED RESTART. WE CONFERRED WITH DISPATCH VIA ACARS; LOOKED AT ZZZ1 AND THE DISTANCE WAS ABOUT THE SAME AS ZZZ. WE BELIEVED WE HAD A GOOD ENG AND WITH DISPATCH APPROVAL; IF ALL ENG INDICATIONS WERE NORMAL; WE WOULD CONTINUE. THE REST OF THE FLT WAS QUIET AND UNEVENTFUL.

Data retrieved from NASA's ASRS site as of May 2009 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.