The aircraft registration would indicate an operation by Horizon Air.
http://www.shanaberger.com/airlines/horizon_q400.htm
This web site lists HUD Cat IIIa (fail-passive) approval for the Q400 version of the Dash.
http://www.rockwellcollins.com/ecat/...l_Collins.html
But with the accuracy inherent with HUD Cat III operations, how an aircraft -- especially a T-prop -- goes off the far end of a 9400-ft runway is a bit of a puzzle.