Narrative:

We originated the flight from the FBO ramp with clearance to taxi to the active runway 21 at charlottesville. Runup and necessary preflight takeoff checklist were completed. A light transport turboprop was at the runup position facing in our direction. He was beside the runway but facing in our taxing direction parked backwards on the runup ramp. We could not tell as we approached that the light transport turboprop was necessarily performing a runup. We transferred over to charlottesville tower and received a clearance for takeoff runway 21. As we got closer to the light transport turboprop we noticed that the grass was blowing as if he was running the engines at near max capacity. We stopped equal to the left wing of the opposing aircraft; called tower and stated that we would wait where we stopped until the aircraft was to finish their runup. The tower controller asked us to repeat our previous transmission. We again stated that the plane was still performing a runup and we would wait: and at the end of our transmission he powered down to idle. We proceeded to state to the tower that the light transport turboprop had powered down and we should be good to go. The tower stated a second clearance to takeoff with caution. At this time the engine of the light transport turboprop was still at idle power; we proceeded on the taxiway to depart runway 21. We had cleared the left wing and left power plant with little to no turbulence as a result of any known prop-wash. We exercised aileron crosswind correction as a general precaution. After crossing the tail end of the plane approaching the right wing and right power-plant; the pilot of the light transport turboprop throttled to full power. We lost ability to keep control of the aileron deflection and as a result of the power of the aircraft our aircraft started to slide directly to the right. We applied full left rudder to try and turn into the aircraft's propwash to attempt to try to keep us from getting pushed off of the taxiway. Our aircraft was unable to overcome the power of the propwash being generated from the light transport turboprop. Our aircraft tipped on its side towards the right wing and continued until the right wing touched the pavement of the taxiway. Due to the wing touching and the full power of the light transport turboprop; our aircraft's prop struck the pavement. As soon as this happened the pilot of the light transport turboprop powered down immediately as if he had a visual of what was going on. The tower controller then asked us if we had or were experiencing any trouble. We stated that we may have a prop strike but were not sure; we then requested a clearance to taxi back to the ramp to make sure. The tower cleared us to taxi down runway 21 and proceeded to ask us once more if we were experiencing any trouble. We stated again that we may have had a prop strike but were not sure and were taxiing back to the ramp. The tower contacted the light transport turboprop on tower frequency and proceeded to ask if he was doing full power runups and the end of the taxiway. The light transport turboprop pilot said yes he was. The tower informed the light transport turboprop pilot that he was not to be doing full power runups and the end of the runway. The light transport turboprop pilot acknowledged by saying; 'I know. Do I need to move or turn around or something?' then the light transport turboprop pilot asked the tower; 'how is the cessna that was behind me?' this confirmed that the light transport turboprop pilot heard our transmission that we were going to hold short while he completed his runup. He also heard two different clearances from tower to us for our clearance to take off as well as us informing tower that he had powered down and we were ready to taxi around him to depart runway 21.the tower contacted us as we approached taxiway alpha once more to ask if we experiencing difficulties or had encountered any problems. We stated that we didn't know for sure; but that we needed to go to the FBO. They cleared us to taxi to the FBO. After parking and shutting down we noticed that we indeed had had a prop strike. We contacted tower once more and stated; 'the aircraft at the end of the runway powered up on us and we did have a prop strike. We're going to be here awhile.' the tower said; 'roger; ok; thank you.'

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Original NASA ASRS Text

Title: The pilots of a taxiing C172 lost control of the aircraft during an encounter with the prop wash of a Light Transport Turboprop performing full power run-up tests.

Narrative: We originated the flight from the FBO ramp with clearance to taxi to the active Runway 21 at Charlottesville. Runup and necessary preflight takeoff checklist were completed. A Light Transport Turboprop was at the runup position facing in our direction. He was beside the runway but facing in our taxing direction parked backwards on the runup ramp. We could not tell as we approached that the Light Transport Turboprop was necessarily performing a runup. We transferred over to Charlottesville Tower and received a clearance for takeoff Runway 21. As we got closer to the Light Transport Turboprop we noticed that the grass was blowing as if he was running the engines at near max capacity. We stopped equal to the left wing of the opposing aircraft; called Tower and stated that we would wait where we stopped until the aircraft was to finish their runup. The Tower Controller asked us to repeat our previous transmission. We again stated that the plane was still performing a runup and we would wait: and at the end of our transmission he powered down to idle. We proceeded to state to the Tower that the Light Transport Turboprop had powered down and we should be good to go. The Tower stated a second clearance to takeoff with caution. At this time the engine of the Light Transport Turboprop was still at Idle power; we proceeded on the taxiway to depart Runway 21. We had cleared the left wing and left power plant with little to no turbulence as a result of any known prop-wash. We exercised aileron crosswind correction as a general precaution. After crossing the tail end of the plane approaching the right wing and right power-plant; the pilot of the Light Transport Turboprop throttled to full power. We lost ability to keep control of the aileron deflection and as a result of the power of the aircraft our aircraft started to slide directly to the right. We applied full left rudder to try and turn into the aircraft's propwash to attempt to try to keep us from getting pushed off of the taxiway. Our aircraft was unable to overcome the power of the propwash being generated from the Light Transport Turboprop. Our aircraft tipped on its side towards the right wing and continued until the right wing touched the pavement of the taxiway. Due to the wing touching and the full power of the Light Transport Turboprop; our aircraft's prop struck the pavement. As soon as this happened the pilot of the Light Transport Turboprop powered down immediately as if he had a visual of what was going on. The Tower Controller then asked us if we had or were experiencing any trouble. We stated that we may have a prop strike but were not sure; we then requested a clearance to taxi back to the ramp to make sure. The Tower cleared us to taxi down Runway 21 and proceeded to ask us once more if we were experiencing any trouble. We stated again that we may have had a prop strike but were not sure and were taxiing back to the ramp. The Tower contacted the Light Transport Turboprop on Tower frequency and proceeded to ask if he was doing full power runups and the end of the taxiway. The Light Transport Turboprop pilot said yes he was. The Tower informed the Light Transport Turboprop pilot that he was not to be doing full power runups and the end of the runway. The Light Transport Turboprop pilot acknowledged by saying; 'I know. Do I need to move or turn around or something?' Then the Light Transport Turboprop pilot asked the Tower; 'How is the Cessna that was behind me?' This confirmed that the Light Transport Turboprop pilot heard our transmission that we were going to hold short while he completed his runup. He also heard two different clearances from Tower to us for our clearance to take off as well as us informing Tower that he had powered down and we were ready to taxi around him to depart Runway 21.The Tower contacted us as we approached Taxiway Alpha once more to ask if we experiencing difficulties or had encountered any problems. We stated that we didn't know for sure; but that we needed to go to the FBO. They cleared us to taxi to the FBO. After parking and shutting down we noticed that we indeed had had a prop strike. We contacted Tower once more and stated; 'The aircraft at the end of the runway powered up on us and we did have a prop strike. We're going to be here awhile.' The Tower said; 'Roger; OK; Thank you.'

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.