Was the pilot trained to take hand off throttles at V1?
Can we get away from referring to "V1" in this series of KingAir.
Sure there are performance tables for Part 25 style operations but this particular Kingair was a Part 23 aeroplane.
In Part 23 aeroplanes, I would raise the gear when the remaining runway was insufficient for me to close both throttles and land while looking to achieve and maintain the Blue Line ASAP.. Part 25 gear was called for when a positive climb was established.
I used to have some very long conversations with Examiners asking for V1, V2 etc while conducting my IR renewals in Barons etc.
There is a big difference between "V1" in a Part 25 aeroplane and "Decision Speed" in a part 23 aeroplane.