Welsh Wingman:
Flugunfall 01 DEC 1974 einer Boeing 727-251 N274US - Stony Point, NY
Litebulbs:
Not sure what you're asking? The indicated airspeed whether accurate or not isn't the issue in determining the energy state of the aircraft. We know what the airspeed was before the incident. We know that the crew are not reported to have added thrust and that the AT was disconnected. You can't climb for free so the energy came from speed. They stopped climbing when they were at the ceiling for their thrust setting at the alpha they were commanding. Note that when TOGA was selected they were able to climb a further 500ft. In this case they added energy to the equation.