I would contend they never reached cruising altitude. Cell phone calls placed from both planes that hit the towers would indicate a lower altitude. The calls would be next to impossible above 8000 feet. A plane can descend on autopilot also. Originally Posted by WombRaiderDo you know the rate of climb for that particular plane? How long were they in flight before the hijackers took over the plane? What was their altitude and airspeed at the time the plane was taken over by hijackers. You're just guessing.
Jim