Narrative:

I had just completed a flight and was parked in front of my hanger letting my turbocharger cool. The plane was idling at 1;000 RPM for cool down. I set my handbrake to free my feet in order to bend down and pick up items on the floor of my cockpit. The brake initially held then slipped allowing the plane to move slowly towards a piper arrow that was tied down approximately 8 ft from my parked 182.I did not feel the movement nor was there any sound until I heard my prop strike the starboard wing of the arrow. The result is a prop strike on my 182 (no structural damage) and damage to the arrow's starboard wing tip.to prevent a repeat occurrence I will not rely on the handbrake while the plane is running but instead will stay on the foot brakes with my eyes forward until the engine is shut down and the prop has stopped rotating.

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Original NASA ASRS Text

Title: A C182 pilot was distracted by ancillary tasks while allowing the parking brake to hold the aircraft in close proximity to other aircraft. When the brake failed to restrain the aircraft the prop struck a parked PA-28.

Narrative: I had just completed a flight and was parked in front of my hanger letting my turbocharger cool. The plane was idling at 1;000 RPM for cool down. I set my handbrake to free my feet in order to bend down and pick up items on the floor of my cockpit. The brake initially held then slipped allowing the plane to move slowly towards a Piper Arrow that was tied down approximately 8 FT from my parked 182.I did not feel the movement nor was there any sound until I heard my prop strike the starboard wing of the Arrow. The result is a prop strike on my 182 (no structural damage) and damage to the Arrow's starboard wing tip.To prevent a repeat occurrence I will not rely on the handbrake while the plane is running but instead will stay on the foot brakes with my eyes forward until the engine is shut down and the prop has stopped rotating.

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.