Originally Posted by
gearlever
There is an update on AvH with additional data from FDR.
Very strange IMHO......
IAS zero until 33 sec on take off run, thereafter suddenly 148 kt, spurious wind speeds of 96 kt multiple times during T/O, N1 of both eng below 40% at 45 until 54 sec.... spooky.
Bek F100 at Almaty on Dec 27th 2019
I'll take a wild guess that they are plotting FMS-derived parameters, which are probably garbage with respect to instantanoeus winds (typically FMS winds are intended for longer term navigational purposes) and garbage with regard to wind on the ground (since the logic won't be set up to deal with the ground case) and possibly the "speed" is again only set up for en route navigation intentions.
I'll also note that none of the parameters have a unit identified for the scale, so things could well be in metric units, given the location.
Assuming the angular terms are in degrees, 12-15 degrees of pitch and AOA both sound pretty high for a non-slatted aircraft. Especially in ground effect....