Ignition Override: It has been 5 years since I was on the "Classic" 747 so my comments may not be totally accurate. You are correct in that the flight management systems are completely redesigned. The other systems have been improved and automated but are quite similar to the -100/-200. The addition of dual GPS's, FANS, satelite voice and data link, worldwide data bases and constant updates makes it a wonderful airplane.
And let us not forget the bunkroom (two beds, pax entertainment etc). On the "Classic" we were always fatigued after (and during) a long flight - up to 12 hours with no relief. They are both are great airplanes but the -400 is much easier on you.
[This message has been edited by aviator (edited 11 February 2000).]