Narrative:

C-150 was untied and unchocked. Engine was started and about to be moved from parking tie down to the wash area for cleaning; in preparation for annual inspection. I realized I had left my cell phone in the car; on the right side of aircraft. Exited aircraft without shutting down engine; placing at least one chock on main wheel or replacing chain on wing. Aircraft started moving; made a slow left turn back into line area; prop striking the right wing of a C-152 tied down on the line.

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Original NASA ASRS Text

Title: C150 pilot reports leaving his running aircraft to retrieve a forgotten item after placing one chock and hooking up one tie down chain. Unmanned aircraft taxis in a wide arc striking another parked aircraft on the ramp.

Narrative: C-150 was untied and unchocked. Engine was started and about to be moved from parking tie down to the wash area for cleaning; in preparation for annual inspection. I realized I had left my cell phone in the car; on the right side of aircraft. Exited aircraft without shutting down engine; placing at least one chock on main wheel or replacing chain on wing. Aircraft started moving; made a slow left turn back into line area; prop striking the right wing of a C-152 tied down on the line.

Data retrieved from NASA's ASRS site as of April 2012 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.