I have just flown an Airbus 380 on ProPilot flight EGLL to KDET however I had to divert and land at KDTW Detroit Metro as the runway at KDET being a city airport is only 5100Ft long and if you managed to stop the aircraft you would not be able to takeoff, unless it was to takeoff with a minimum amount of fuel and fly to KDTW to refuel. The destination needs to be altered to KDTW, which is the International airport as this is the airport that heavies would fly into.