Narrative:

Upon starting engines to warm the oil for a preflight check the aircraft moved forward and struck a gpu damaging the propeller. The ramp was slick and extremely sandy. Better airport field condition management may help this problem. The aircraft was properly checked per air carrier standards both, main gear (left only) and nose gear were chocked. Aircraft pushed chocks 15 ft. Did not aid in stopping the plane. Supplemental information from acn 297652: the aircraft was preflted by me then both engines were started to warm them up to above 0 degrees C to perform a propeller auxiliary pump check. After the engines were started I left the cockpit and so entered the galley. I then heard a loud banging noise and went to the cockpit to find out what happened. The left propeller hit a gpu. The propeller was delaminated on each blade about 6 inches from the tip. The conditions on the ramp were as follows: wet, sandy, type ii deice fluid covering the area. It was snowing lightly and the wind was heavy with gusts. Both the left main gear wheels and nosewheels were chalked. The aircraft slid forward, with the chalks inserted, about 15 ft. The wind was blowing at the rear of the airplane. No checklists were verbalized prior this incident. Callback conversation with reporter revealed the following information: the reporter stated he was in the cockpit. The first officer activity after he started the engines and left the cockpit and entered the galley and heard the banging noise and went back to the cockpit to find out what happened would lead one to believe there was no one in the cockpit with the engines running. I asked the reporter if the brakes were set and he said he could not remember, but, I should call back some other time because he was just going out the door for a memorial day party. This is the reporter who blamed the incident on the ramp conditions!

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Original NASA ASRS Text

Title: UNATTENDED ACFT WITH ENG RUNNING MOVES FORWARD 15 FT AND STRIKES PWR CART WITH PROPS.

Narrative: UPON STARTING ENGS TO WARM THE OIL FOR A PREFLT CHK THE ACFT MOVED FORWARD AND STRUCK A GPU DAMAGING THE PROP. THE RAMP WAS SLICK AND EXTREMELY SANDY. BETTER ARPT FIELD CONDITION MGMNT MAY HELP THIS PROB. THE ACFT WAS PROPERLY CHKED PER ACR STANDARDS BOTH, MAIN GEAR (L ONLY) AND NOSE GEAR WERE CHOCKED. ACFT PUSHED CHOCKS 15 FT. DID NOT AID IN STOPPING THE PLANE. SUPPLEMENTAL INFO FROM ACN 297652: THE ACFT WAS PREFLTED BY ME THEN BOTH ENGS WERE STARTED TO WARM THEM UP TO ABOVE 0 DEGS C TO PERFORM A PROP AUX PUMP CHK. AFTER THE ENGS WERE STARTED I LEFT THE COCKPIT AND SO ENTERED THE GALLEY. I THEN HEARD A LOUD BANGING NOISE AND WENT TO THE COCKPIT TO FIND OUT WHAT HAPPENED. THE L PROP HIT A GPU. THE PROP WAS DELAMINATED ON EACH BLADE ABOUT 6 INCHES FROM THE TIP. THE CONDITIONS ON THE RAMP WERE AS FOLLOWS: WET, SANDY, TYPE II DEICE FLUID COVERING THE AREA. IT WAS SNOWING LIGHTLY AND THE WIND WAS HEAVY WITH GUSTS. BOTH THE L MAIN GEAR WHEELS AND NOSEWHEELS WERE CHALKED. THE ACFT SLID FORWARD, WITH THE CHALKS INSERTED, ABOUT 15 FT. THE WIND WAS BLOWING AT THE REAR OF THE AIRPLANE. NO CHKLISTS WERE VERBALIZED PRIOR THIS INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED HE WAS IN THE COCKPIT. THE FO ACTIVITY AFTER HE STARTED THE ENGS AND LEFT THE COCKPIT AND ENTERED THE GALLEY AND HEARD THE BANGING NOISE AND WENT BACK TO THE COCKPIT TO FIND OUT WHAT HAPPENED WOULD LEAD ONE TO BELIEVE THERE WAS NO ONE IN THE COCKPIT WITH THE ENGS RUNNING. I ASKED THE RPTR IF THE BRAKES WERE SET AND HE SAID HE COULD NOT REMEMBER, BUT, I SHOULD CALL BACK SOME OTHER TIME BECAUSE HE WAS JUST GOING OUT THE DOOR FOR A MEMORIAL DAY PARTY. THIS IS THE RPTR WHO BLAMED THE INCIDENT ON THE RAMP CONDITIONS!

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.