The Ka-50 (or Hokum' in NATO parlance) is one of two attack helicopters (the other being the Mi-28) that were developed against a Russian army requirement for a new close air support helicopter.
Today the center in Torzhok holds 6 Ka-50 helicopters, and only 4 of them can fly in the air.
The machines weren't used that often till 2009 and 2010 when due to the preparation activities held prior to the parade on Victory Day the minimum annual flying time constituted over 50 and 100 hours, respectively.
A pilot is considered as qualified if his minimum annual flying time accounts for 50 hours. Another problem consists in the fact that pilots are more keen on using not Ka-50 but other helicopters for flying.