PA-28R Cherokee Arrow All Series
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Flight Instructor; Flight Crew Commercial
Flight Crew Last 90 Days 200; Flight Crew Total 2100; Flight Crew Type 150
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway
Aircraft Aircraft Damaged
Aircraft; Human Factors; Procedure
Practice power-off 180 approach with student flying. Student is a Private Pilot working toward commercial certificate. Approach was slightly high; and airplane was put into a slip to dissipate excess energy. During slip; toe of student's left foot became stuck between toe brake pedal and the crossbar behind the pedals; resulting in left brake pressure being applied on final. This condition was not discovered until touchdown; when the airplane jerked to the left with the left brake locked. I jumped on the controls; but was unable to counter due to the student's inability to release left brake pressure. The aircraft skidded left and exited the runway; passing between two runway edge lights and missing a runway sign. Aircraft came to a stop in the grass near the runway intersection; where I shut down and we exited the aircraft to visually inspect the aircraft. Company was notified; the local FBO checked on us; and upon receiving approval to do so; we taxied to the FBO for maintenance. Only visible damage was a flat spot on the left main tire where tread was worn. In the future; I will stress the importance of proper positioning of the feet on the rudder pedals and will try to develop the habit of testing the brakes prior to touchdown.
PA-28 instructor pilot reported that student pilot caught a foot between brake pedal and crossbar; which resulted in a runway excursion on landing. Instructor was unable to overcome stuck brake.