Pulse 1
This then is the fault which accelerated the aircraft from the "60-80Kts" groundspeed observed by Mr Holbrook to 162.8 kts just prior to the flare before impact.
It also prevented the Crew from climbing to Safety altitude and/or turning the aircraft away from the high ground they knew lay ahead. In addition it prevented them from making a distress call or squawking emergency on the transponder.
This continued until just prior to impact when this fault disappeared without trace and enabled the operating pilot to flare the aircraft in a last desperate attempt to avoid disaster.
With all this going on I am surprised that the crew had the spare capacity to select a new waypoint on the SuperTANS computer, an action which required three deliberate acts by the Pilots.