Bug identified after Alaska Airlines planes bump runway while taking off
There is another bug here...<p>If the plane was told how much weight was onboard, and it knows what throttle it was at...   then it should know what acceleration it was expecting.<p>If it accelerated slower than expected, then there must be something wrong!   So abort the takeoff...<p>Planes should have alerts for this kind of thing.  If, 1 second after throttle is applied, the plane hasn't achieved the predicted speed, then the takeoff should be aborted - by this stage, you'll be well under the maximum abort speed, so you can stay safely on the ground and figure out whats wrong.   Being overweight is just one possible cause - it might instead be that an engine isn't producing sufficient thrust, and that would probably doom the plane.