Narrative:

Flying at FL310, copilot's window started arcing. Turned off window heat as per cockpit operations manual. 2 mins later, window cracked. Determined outside pane only. Due to icing conditions in europe, dispatch decided we should land dtw. Dumped 24000 pounds fuel and landed dtw.

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Original NASA ASRS Text

Title: A DC10-30 FLC DIVERTS TO DTW AFTER EXPERIENCING A BROKEN OUTER PANE ON THE FO'S FRONT WINDOW WHILE ENRTE TO EUROPE NEAR JFK, NY.

Narrative: FLYING AT FL310, COPLT'S WINDOW STARTED ARCING. TURNED OFF WINDOW HEAT AS PER COCKPIT OPS MANUAL. 2 MINS LATER, WINDOW CRACKED. DETERMINED OUTSIDE PANE ONLY. DUE TO ICING CONDITIONS IN EUROPE, DISPATCH DECIDED WE SHOULD LAND DTW. DUMPED 24000 LBS FUEL AND LANDED DTW.

Data retrieved from NASA's ASRS site as of July 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.