NW Flight 188 misses Minneapolis airport

A Northwest Airline Airbus A320 making the Flight 188 route from San Diego to Minneapolis overshot the destination airport by about 150 miles fearing the ground controllers that the plane might have been hijacked. The air traffic control tower lost communication with the aircraft carrying 147 passengers, when it was flying at 37000 feet. After the communication was re-established the pilot answers were so vague that the controllers instructed the crew to make a series of unnecessary maneuvers to convince themselves the pilots were still in control of the jet. Flight 188 landed safely at Minneapolis St. Paul International Airport at 9 p.m. The A320 pilots said they missed the airport because they were distracted due to a heated discussion over airline policy but FAA thinks also that the crew might have fallen asleep.