The on board computer, with a very simple software, could warn them of serious danger ahead as they are accelerating.
Use wheel velocity (or airspeed) to calculate acceleration. Add the EPR indication one can calculate mass. Further more you can calculate:
- velocity at runway length (assuming entered or from database)
- runway length used at 160 knots (or V1)
- abnormal acceleration
- etc.....
I wonder why they don't have this ??