It was due to a disruptive passenger. Flt was about an hour north of DTW
when this occured. Pax was a Chinese national who was becoming a real problem, so decision made to divert to DTW
, have the authorities deal with him and continue flight to NRT
. Dumped 130k of fuel, broke almost a full load of pax onward connections from NRT
in the process. Very, very expensive for the airline, but little other choice. Continuing in these circumstances is not really an option, especially with another 9-10 hours or so ahead.