In summer last year on a SAS flight from Seattle to Copenhagen there was a middle aged Danish passenger who acted violently and provoking against his wife and the cabin crew, and he threatened one F/A.
When he refused to obey to orders from the captain to stay quiet, the captain demanded him watched by a crew member until landing in Copenhagen.
SAS reported the violent passenger to the police for having endangered flight safety, and now the Copenhagen city court has sentenced him to jail for two weeks.
The passenger appealed to the district (intermediate) court and pleaded not guilty.
Source: FLYV, the monthly journal of Kongelig Dansk Aeroklub (Royal Danish Aeroclub).
If the appeal court doesn't discover new aspects for the defence of the accused (which is hard to imagine) then it will normally add 50 or 100% to his sentence.
So at least with destination CPH, future passengers either behave, or they look forward to a few weeks in the shadow. That trial and its outcome was indeed very good for air traffic!!!
Best regards, Preben Norholm