AIR AMBULANCE TKOF ON RWY WITH 7-8 FT SNOWBANKS. HAS ASYMMETRICAL THRUST CAUSING ACFT TO VEER. R WING CONTACTS SNOWBANK. ABORT; ACFT SPINS.

Narrative

THIS INCIDENT HAPPENED ON TKOF ON A RWY WHICH WAS SNOWPLOWED WITH DRY PAVEMENT AND ABOUT 7-8 FT SNOWBANKS. THE WIDTH WAS NOTAM AT 60 FT WIDE AND WAS RPTED BY ARPT MGR TO BE 60-70 FT WIDE. ON DEP FROM RWY 15; THE PLOWED AREA WAS OFFSET 5 FT FROM THE R OF CTRLINE. ON TKOF ROLL; AFTER RELEASING THE BRAKES AND APPLYING PWR; THERE WAS A PWR SURGE WHICH PULLED THE ACFT TO THE L. UPON CORRECTING WITH R RUDDER AND DIFFERENTIAL PWR THE PLANE WENT TO THE R AND TOUCHED THE R WING TIP TO THE R SIDE SNOWBANK. AT THAT TIME I ABORTED TKOF AND TRIED TO STOP THE ACFT. THE ACFT WAS SLOWED TO 30-40 MPH WHEN IT SPUN TO THE R HITTING THE NOSE AND STOPPING WITH THE NOSE AND THE L WING TIP IN THE SNOWBANK. DAMAGE TO THE ACFT WAS TO THE NOSE RADOME; SKINS BEHIND NOSE RADOME AND NOSE LNDG GEAR LINKAGE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES HIS LETTER FROM THE FAA INDICATES THEY BELIEVE HE WAS DEPARTING ON A RWY WHICH DID NOT HAVE SUFFICIENT WIDTH FOR HIS ACFT. THE PLANE HAS WING SPAN OF APPROX 44 FT. RPTR OBVIOUSLY FELT HE HAD ENOUGH WIDTH ACCORDING TO INFO GIVEN.