Narrative:

When landing at ZZZ the airplane went off the end of the runway. ZZZ is a 1650 ft long gravel strip in south western ZZZ. At the time of landing; the runway was covered in a layer of snow that had melted and refrozen. The runway was just a smooth layer of ice; it had not been roughened with the grater or had gravel spread on it. While flying to ZZZ my ground speed was slightly higher than normal; causing me to believe that the wind was out of the south. Based on this assumption I entered a downwind for runway 20. I flew a normal pattern for runway 20; but when I turned final; I noticed my ground speed was about 5 KTS higher than my airspeed. I decided to continue the approach; believing that the tailwind was minimal and would not drastically increase the landing distance. The flare and landing were performed as normal; immediately upon touchdown the flaps were retracted and heavy braking was applied. Due to the runway conditions; the plane did not slow down as fast as I thought it would. When I reached the far end of the runway the plane was moving less than 15 mph; going through the turn around area and off the embankment at the end. The snow after the embankment was 6-12 inches deep and crusted; causing the plane to stop quickly. The nosewheel broke through the crust and came off the airplane. The lower propeller blades were buried in the snow; stopping the engine. I turned off the master and magnetos and then we exited the airplane. The major cause of this incident was my decision to land with a tailwind; the main contributing factor was the icy runway. If I had chosen to land in the other direction when I realized there was a tailwind this would not have happened.

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Original NASA ASRS Text

Title: CE207 PLT GOES OFF END OF ICY RWY AT ZZZ.

Narrative: WHEN LNDG AT ZZZ THE AIRPLANE WENT OFF THE END OF THE RWY. ZZZ IS A 1650 FT LONG GRAVEL STRIP IN SOUTH WESTERN ZZZ. AT THE TIME OF LNDG; THE RWY WAS COVERED IN A LAYER OF SNOW THAT HAD MELTED AND REFROZEN. THE RWY WAS JUST A SMOOTH LAYER OF ICE; IT HAD NOT BEEN ROUGHENED WITH THE GRATER OR HAD GRAVEL SPREAD ON IT. WHILE FLYING TO ZZZ MY GND SPD WAS SLIGHTLY HIGHER THAN NORMAL; CAUSING ME TO BELIEVE THAT THE WIND WAS OUT OF THE S. BASED ON THIS ASSUMPTION I ENTERED A DOWNWIND FOR RWY 20. I FLEW A NORMAL PATTERN FOR RWY 20; BUT WHEN I TURNED FINAL; I NOTICED MY GND SPD WAS ABOUT 5 KTS HIGHER THAN MY AIRSPD. I DECIDED TO CONTINUE THE APCH; BELIEVING THAT THE TAILWIND WAS MINIMAL AND WOULD NOT DRASTICALLY INCREASE THE LNDG DISTANCE. THE FLARE AND LNDG WERE PERFORMED AS NORMAL; IMMEDIATELY UPON TOUCHDOWN THE FLAPS WERE RETRACTED AND HVY BRAKING WAS APPLIED. DUE TO THE RWY CONDITIONS; THE PLANE DID NOT SLOW DOWN AS FAST AS I THOUGHT IT WOULD. WHEN I REACHED THE FAR END OF THE RWY THE PLANE WAS MOVING LESS THAN 15 MPH; GOING THROUGH THE TURN AROUND AREA AND OFF THE EMBANKMENT AT THE END. THE SNOW AFTER THE EMBANKMENT WAS 6-12 INCHES DEEP AND CRUSTED; CAUSING THE PLANE TO STOP QUICKLY. THE NOSEWHEEL BROKE THROUGH THE CRUST AND CAME OFF THE AIRPLANE. THE LOWER PROP BLADES WERE BURIED IN THE SNOW; STOPPING THE ENG. I TURNED OFF THE MASTER AND MAGNETOS AND THEN WE EXITED THE AIRPLANE. THE MAJOR CAUSE OF THIS INCIDENT WAS MY DECISION TO LAND WITH A TAILWIND; THE MAIN CONTRIBUTING FACTOR WAS THE ICY RWY. IF I HAD CHOSEN TO LAND IN THE OTHER DIRECTION WHEN I REALIZED THERE WAS A TAILWIND THIS WOULD NOT HAVE HAPPENED.

Data retrieved from NASA's ASRS site as of January 2009 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.