The stabilator on the Blackhawk
it happened in the Blackhawk ISTR.
Thanks Skadi - maybe an AFCS or Hyd malfunction.
The stabilator on the Blackhawk at 39 degrees trailing edge down provides more pitch control power than can be reacted by the main rotor pitch axis. Manual over rides were provided at the base of each cyclic stick grip to provide stabilator override in the event of a problem.