It sounds like a bad joke: Northwest Airlines flight 188 from San Diego (KSAN) to Minneapolis (KMSP) overshot its intended destination by 150 miles on Wednesday evening.
What happened in that cockpit? The pilots say they “lost situational awareness” while arguing about airline policy. The immediate suspicion is that they fell asleep.
Contact with the Airbus A320 was lost at about 6:45 p.m. local time, the aircraft overflew Minneapolis and crossed the state line into Wisconsin before the crew responded to ATC and turned back. A review of the cockpit voice recorder is underway and will probably reveal the real cause of this small detour.
Video - Short interview with pilot
Flight 188 at Flightaware: