Narrative:

Wing walkers present. After completing turn into position marshall 'X' signal is given. Toe brakes are applied to completely stop the aircraft. Power cart arrives in right front of aircraft. My right hand moves off power levers to the park brake, setting the park brake while toe brakes are still applied. Condition levers are set to feather, and propellers feather. Seat belt sign is turned off. Clock is started for 30 second engine cool down period. I notice movement and see park brake has unseated itself, and move quickly to rest park brake, stopping the aircraft. Ramper sees aircraft move, remounts tug with his focus forward away from the aircraft with the position of the tug. He doesn't see the aircraft has stopped and pulls away tug with power cart in tow, contacting radome of aircraft with the left front corner of the power cart. This pulls off the radome forward, and radome lands in the left front of the aircraft about 20' away, spinning on the ground. Both engines are shut down and shutdown checks are completed. Damage to the aircraft is minor and consists of a puncture hole in the radome of about 3' in diameter where the power cart struck, and broken fasteners that hold the radome on. Ramp procedures should not allow any equipment to be stopped in front of an aircraft, in this case within just a few ft, prior to the nose wheel being chocked. This seems too obvious.

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Original NASA ASRS Text

Title: ACR JUST PARKED AT GATE HIT BY POWER CART.

Narrative: WING WALKERS PRESENT. AFTER COMPLETING TURN INTO POS MARSHALL 'X' SIGNAL IS GIVEN. TOE BRAKES ARE APPLIED TO COMPLETELY STOP THE ACFT. PWR CART ARRIVES IN RIGHT FRONT OF ACFT. MY RIGHT HAND MOVES OFF PWR LEVERS TO THE PARK BRAKE, SETTING THE PARK BRAKE WHILE TOE BRAKES ARE STILL APPLIED. CONDITION LEVERS ARE SET TO FEATHER, AND PROPS FEATHER. SEAT BELT SIGN IS TURNED OFF. CLOCK IS STARTED FOR 30 SEC ENG COOL DOWN PERIOD. I NOTICE MOVEMENT AND SEE PARK BRAKE HAS UNSEATED ITSELF, AND MOVE QUICKLY TO REST PARK BRAKE, STOPPING THE ACFT. RAMPER SEES ACFT MOVE, REMOUNTS TUG WITH HIS FOCUS FORWARD AWAY FROM THE ACFT WITH THE POS OF THE TUG. HE DOESN'T SEE THE ACFT HAS STOPPED AND PULLS AWAY TUG WITH PWR CART IN TOW, CONTACTING RADOME OF ACFT WITH THE LEFT FRONT CORNER OF THE PWR CART. THIS PULLS OFF THE RADOME FORWARD, AND RADOME LANDS IN THE LEFT FRONT OF THE ACFT ABOUT 20' AWAY, SPINNING ON THE GND. BOTH ENGS ARE SHUT DOWN AND SHUTDOWN CHKS ARE COMPLETED. DAMAGE TO THE ACFT IS MINOR AND CONSISTS OF A PUNCTURE HOLE IN THE RADOME OF ABOUT 3' IN DIAMETER WHERE THE PWR CART STRUCK, AND BROKEN FASTENERS THAT HOLD THE RADOME ON. RAMP PROCS SHOULD NOT ALLOW ANY EQUIP TO BE STOPPED IN FRONT OF AN ACFT, IN THIS CASE WITHIN JUST A FEW FT, PRIOR TO THE NOSE WHEEL BEING CHOCKED. THIS SEEMS TOO OBVIOUS.

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.