magicE, profitmax;
Those wheels would not have been turning but skidding along the concrete. Doesnt make a difference it was park brake or the pedals.
Not quite correct.
The park brake applies pressure only to the main gear and not the center gear, (except when the ground spoilers are deployed where, in an emergency (assumed to be on the runway), park-brake application will set all wheel brakes including those on the center gear).
The brake pedals apply wheel and center gear brake pressure. The left pedal applies left main brakes plus forward center gear brakes, the right pedal applies right main brakes plus aft center gear brakes.
Anti-skid braking is available on all wheel brakes, (mains and centers), above 10kts groundspeed, and, with heavy braking only, below 10kts. Anti-skid is obviously not available on the park brake.
Given this, the main and center gear wheels would be turning even under maximum pedal deflection, just above the skid point. On-site, there would be signs of heavy braking if indeed it was applied through the pedals, but there would not be skidding.
If the park brake remained set throughout the accident sequence, the wheels would essentially be locked and not turning however.
Hope this helps.
PJ2