What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pilot cleared to land at st. Paul airport when he experienced complete loss of control of the main rotor. After several out of control maneuvers the aircraft landed upright on top of a flat warehouse roof. Damage appears ti be mainly confined to the landing skids. Investigation reveal an appearant failure of the rotor servos attach plate retainers.
As the FAA filed it
(-23) PILOT CLEARED TO LAND AT ST. PAUL AIRPORT WHEN HE EXPERIENCED COMPLETE LOSS OF CONTROL OF THE MAIN ROTOR. AFTER SEVERAL OUT OF CONTROL MANEUVERS THE AIRCRAFT LANDED UPRIGHT ON TOP OF A FLAT WAREHOUSE ROOF. DAMAGE APPEARS TI BE MAINLY CONFINED TO THE LANDING SKIDS. INVESTIGATION REVEAL AN APPEARANT FAILURE OF THE ROTOR SERVOS ATTACH PLATE RETAINERS.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.