Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Flight Crew Private
Flight Crew Last 90 Days 17; Flight Crew Total 492; Flight Crew Type 17
Aircraft Equipment Problem Critical; Ground Event / Encounter Loss Of Aircraft Control; Ground Event / Encounter Aircraft
Aircraft Aircraft Damaged; General Maintenance Action
Aircraft; Procedure
My aircraft had just come out of maintenance to correct the problem of slewing to the left. I was going to fly it around the pattern to check the work. After startup; I eased forward out of the parking tie down and turned left onto the taxiway line toward the active runway. I estimate I was perhaps moving at 2-3 mph as I depressed the left rudder and turned left. I straightened the pedals but the aircraft continued turning left and was slowly heading in a circle toward the aircraft parked next to mine.  I applied right pedal and brake and emergency brake but to no avail as the aircraft continued slowly towards the other plane. At that point I was almost 180 degrees from my original position. I attempted to shut the engine down but the plane continued to coast into the spinner of the second plane; so that we were almost nose to nose. I sustained prop damage and the other aircraft had spinner damage from my prop; which evidently was still turning when it hit. I estimate the collision speed was perhaps 2 mph. The same maintenance shop had worked on the brakes a couple of weeks ago as well as yesterday on the problem of flying left. I do not know how this problem could have been avoided from the cockpit as the plane simply would not respond. Obviously this was a maintenance error. I hope we find the exact cause.
Pilot reported a slow speed ground collision occurred when he was unable to stop his aircraft from turning left.