VmLB 0
I think at around 18.5t weight. Flaps zero that it was ...the best drift down speed would have been around 135kts..With the left prop feathered and right prop not..am not sureif this speed would have produced an ideal result.It looked like they were descending at a normal approach vertical speed but a flatter attitude based on the video from below and from thelater video from varandah on top of that building. VmHB (flaps 35 approach speed) might have been closer to 104kts