Originally Posted by Greek God
If icing was present as seems to be indicated to the extent it would affect the pitots then what would extensive airframe icing do to the AUW and was there any indication wing anti ice was being used?
Secondly I find it hard to reconcile being able to achieve a 7000fpm ROC in two and a half thousand feet from F350?
Clogging of the pitots is thought to be caused by ingestion of ice particles. At -40 °C there was no liquid water to cause icing of the airframe.
Increasing rate of climb to 7000 and back to 700 fpm is compatible with no more than about +/- 0.2 g.