Originally Posted by tdracer
here had been a hydraulic fluid spill near the nose and the tires slipped on the hydraulic fluid. The ground crew reported the nose had moved about six inches - those of us in the flight deck thought it had been more like six feet .
We had an outboard engine stall on a 744 high power engine run and the aircraft reportedly moved six feet sideways, althought it could have been the same as in your case. Might be a good idea to buckle up for engine runs.
Originally Posted by tdracer
It's not really there for ground runs (though it would still be of benefit if an engine ran away uncontrolled) - it's there for takeoff or landing where an uncontrollable high thrust event could result in a high speed runway departure.
According to my notes, it's not active below 70kts CAS. (EDIT: Not-applicable... Was confusing it with Thrust Assym Protection)