PA-18/19 Super Cub
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 150; Flight Crew Total 8000; Flight Crew Type 1
Training / Qualification; Time Pressure; Confusion
Aircraft Equipment Problem Critical; Inflight Event / Encounter Loss Of Aircraft Control
Aircraft Aircraft Damaged
Aircraft
[I was] receiving dual instruction in my new PA18. Departed and proceeded southwest doing air work; steep turns; stalls; slow flight. [We] went to a nearby dirt strip to practice full stop landings and takeoffs. My Instructor; asked us to do a mid field into a left downwind for Runway 26. I asked if he would like to demonstrate the first landing; he declined and said 'I will follow you through on the controls.' He asked for an approach with one notch of flaps and to come over the threshold at 50 MPH; I complied. As I bled off airspeed and we touched down on centerline; under control and in the remains of the touchdown zone; nose high. Soft landing and we were rolling out as I brought the stick full aft as soon as the tail wheel was in firm contact the aircraft yawed hard to the right. I applied full left rudder and got no response. If anything it got worse. We were heading for the brush and trees on the right side and I applied full brakes to stop and we flipped over at approximately 10 MPH. No injures requiring medical attention; substantial damage to aircraft. Neither myself nor the Instructor had right brake on to cause yaw. After inspecting wreckage photos we noticed tail wheel hard to the right and rudder left.
A PA-18's tail wheel was discovered hard right after it flipped over at 10 KTS when the pilot applied full brakes to prevent the aircraft from entering trees following a landing.