PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Flight Crew Flight Instructor; Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 75; Flight Crew Total 208
Other / Unknown
Aircraft Equipment Problem Less Severe; Ground Event / Encounter Object; Ground Excursion Runway
Aircraft Aircraft Damaged
Aircraft; Human Factors
After cleared for the touch and go for Runway XX; I continued the approach. I requested a wind check and had a stabilized; normal landing. After touchdown; I had right rudder input to maintain directional control; however; the aircraft veered to the left; instructor also acted with right rudder input to confirm the input but the aircraft did not react and continued to veer off to the left. It resulted in us running over runway hold short sign for the intersecting runway. The aircraft came to a stop in the grass. As per procedure; we shutdown the aircraft and waited for fire and rescue.
We were coming in to do pattern work. When we were on final I contacted tower to confirm we were clear for the touch and go on runway XX. The student had the plane under control the whole way down then once we touched down the aircraft was going to the left. To correct the student was doing the right thing by putting in right rudder to bring it back to the right and center it up. Unfortunately the rudder inputs were not responding; so the aircraft keep going to the left and we went heading into the grass on the left side of runway. We ended up hitting the intersecting runway hold short sign and stopping a little after that. We shut down the aircraft and waited for fire and rescue to come over to us.
PA28 pilot under training experiences a normal landing with the aircraft drifting towards the left despite right rudder input by both the reporter and the instructor. A runway excursion occurs with the aircraft contacting an airport sign.