Narrative:

Diverted to S21 (VMC) cancelled flight plan when I dropped below radar coverage area (7000 ft MSL) to 5500 ft MSL. Flew along west side of runway 18. Inspected VASI, lighted windsock (calm winds) and plowed condition of surface. The lights were not visible on the ramp, humped runway but they were airborne -- edge lights were obscured by snow berms. Made a right turn 180 degrees to runway 36, aligned aircraft and aborted touchdown due to long projected touchdown. Retracted gear, climbed out and executed course reversal to align airplane with runway 18, descended at 90 KTS -- full flaps, 84 KTS, and touched down near center of runway. As I started to pull pilot control lever into reverse, the airplane veered to left -- the right rudder and aileron inputs were ineffective in correcting the divergence prior to impacting the airplane on top of a 3 ft depth of snow. The plane came to rest with the right wing 2 ft above the snow berm on the left side of the runway. It was approximately 1/3 of the way down the runway (5000 ft by 70 ft wide). The wing span is 50 ft (approximately). Deceleration was smooth and passenger in aft cabin were not injured. The airplane was nose down due to drag link of nose gear snapping. Fuselage was not dented or distorted. 2 inches of nose gear landing gear doors were broken off and 4 blade propellers were bent. It is unknown whether icy (black ice) runway or mechanical condition contributed to aircraft exiting runway on left side. Runway (braking action) was reported following day to be poor. Pilot assisted passenger out of aircraft and appropriate notification procedures were implemented via cell phone. Contributing factors were: flying 10 out of 11 days back-to-back, late night operations, 14 hour duty day.

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Original NASA ASRS Text

Title: A PC12 PLT, LNDG AT SUNRISE, OR (S21), EXITED THE L SIDE OF THE RWY.

Narrative: DIVERTED TO S21 (VMC) CANCELLED FLT PLAN WHEN I DROPPED BELOW RADAR COVERAGE AREA (7000 FT MSL) TO 5500 FT MSL. FLEW ALONG W SIDE OF RWY 18. INSPECTED VASI, LIGHTED WINDSOCK (CALM WINDS) AND PLOWED CONDITION OF SURFACE. THE LIGHTS WERE NOT VISIBLE ON THE RAMP, HUMPED RWY BUT THEY WERE AIRBORNE -- EDGE LIGHTS WERE OBSCURED BY SNOW BERMS. MADE A R TURN 180 DEGS TO RWY 36, ALIGNED ACFT AND ABORTED TOUCHDOWN DUE TO LONG PROJECTED TOUCHDOWN. RETRACTED GEAR, CLBED OUT AND EXECUTED COURSE REVERSAL TO ALIGN AIRPLANE WITH RWY 18, DSNDED AT 90 KTS -- FULL FLAPS, 84 KTS, AND TOUCHED DOWN NEAR CTR OF RWY. AS I STARTED TO PULL PLT CTL LEVER INTO REVERSE, THE AIRPLANE VEERED TO L -- THE R RUDDER AND AILERON INPUTS WERE INEFFECTIVE IN CORRECTING THE DIVERGENCE PRIOR TO IMPACTING THE AIRPLANE ON TOP OF A 3 FT DEPTH OF SNOW. THE PLANE CAME TO REST WITH THE R WING 2 FT ABOVE THE SNOW BERM ON THE L SIDE OF THE RWY. IT WAS APPROX 1/3 OF THE WAY DOWN THE RWY (5000 FT BY 70 FT WIDE). THE WING SPAN IS 50 FT (APPROX). DECELERATION WAS SMOOTH AND PAX IN AFT CABIN WERE NOT INJURED. THE AIRPLANE WAS NOSE DOWN DUE TO DRAG LINK OF NOSE GEAR SNAPPING. FUSELAGE WAS NOT DENTED OR DISTORTED. 2 INCHES OF NOSE GEAR LNDG GEAR DOORS WERE BROKEN OFF AND 4 BLADE PROPS WERE BENT. IT IS UNKNOWN WHETHER ICY (BLACK ICE) RWY OR MECHANICAL CONDITION CONTRIBUTED TO ACFT EXITING RWY ON L SIDE. RWY (BRAKING ACTION) WAS RPTED FOLLOWING DAY TO BE POOR. PLT ASSISTED PAX OUT OF ACFT AND APPROPRIATE NOTIFICATION PROCS WERE IMPLEMENTED VIA CELL PHONE. CONTRIBUTING FACTORS WERE: FLYING 10 OUT OF 11 DAYS BACK-TO-BACK, LATE NIGHT OPS, 14 HR DUTY DAY.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.