Untended, idling aircraft rolls into a parked aircraft.

Attributes
ACN	100230
Time
Date	198812
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : apt
State Reference	TN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	other
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	ground : parked ground : preflight
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 150 flight time total : 2500 flight time type : 500
ASRS Report	100230
Events
Anomaly	conflict : ground critical non adherence : far
Independent Detector	other other : unspecified
Resolutory Action	none taken : unable
Consequence	other
Miss Distance	horizontal : 0 unspecified : 0 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

It was cold that morning so after checking the oil and fuel sumps we started the plane and then I started to finish my preflight, I didn't worry about the plane rolling because it was off the pavement in grass sloping away from the ramp so I untied the aircraft I noticed the last time I looked at the tach it was running around 6-700 RPM's. Everything was fine. The aircraft was untied, running, at low RPM, and was not moving. I turned my back for 30 seconds to a minute and the next thing was it was moving and was too late to act. My plane had rolled into another and damaged the left aileron and a part of the wing. I should never have been so careless. I didn't even think of the wind which helped cause this, my plane is so heavy I didn't think it would move. In the future I will be much more cautious around the aircraft and hope nothing like this happens again.

Original NASA ASRS Text

Title: UNTENDED, IDLING ACFT ROLLS INTO A PARKED ACFT.

Narrative: IT WAS COLD THAT MORNING SO AFTER CHKING THE OIL AND FUEL SUMPS WE STARTED THE PLANE AND THEN I STARTED TO FINISH MY PREFLT, I DIDN'T WORRY ABOUT THE PLANE ROLLING BECAUSE IT WAS OFF THE PAVEMENT IN GRASS SLOPING AWAY FROM THE RAMP SO I UNTIED THE ACFT I NOTICED THE LAST TIME I LOOKED AT THE TACH IT WAS RUNNING AROUND 6-700 RPM'S. EVERYTHING WAS FINE. THE ACFT WAS UNTIED, RUNNING, AT LOW RPM, AND WAS NOT MOVING. I TURNED MY BACK FOR 30 SECONDS TO A MINUTE AND THE NEXT THING WAS IT WAS MOVING AND WAS TOO LATE TO ACT. MY PLANE HAD ROLLED INTO ANOTHER AND DAMAGED THE L AILERON AND A PART OF THE WING. I SHOULD NEVER HAVE BEEN SO CARELESS. I DIDN'T EVEN THINK OF THE WIND WHICH HELPED CAUSE THIS, MY PLANE IS SO HEAVY I DIDN'T THINK IT WOULD MOVE. IN THE FUTURE I WILL BE MUCH MORE CAUTIOUS AROUND THE ACFT AND HOPE NOTHING LIKE THIS HAPPENS AGAIN.

Data retrieved from NASA's ASRS site as of August 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.