Incident Overview
A student pilot and flight instructor were conducting a student orientation flight in an airplane that lacked operational brakes for the right seat occupant. The incident occurred during the landing phase.
Sequence of Events
While landing, the student pilot, seated in the left seat, applied what was described as 'strong uneven constant pressure' on the left brake pedal. In an attempt to counteract the left-turning tendency induced by the braking, the flight instructor applied right rudder input. Despite this corrective action, the aircraft skidded off the left side of the runway. The excursion resulted in the collapse of the right landing gear, which in turn caused the right wing to strike the ground.
Aircraft Configuration
The airplane was noted to be configured without brakes for the right seat occupant, limiting the instructor's ability to directly control braking from the right seat.
Operational Context
No information regarding the aircraft type, registration, date, location, operator, or occupants (beyond their roles as student pilot and flight instructor) was provided in the source. Additionally, the source did not specify any injuries, time of day, weather conditions, or air traffic control involvement.
Findings
The investigation source did not state a probable cause for the incident. The report highlighted the student's strong uneven constant pressure on the left brake pedal and the instructor's attempt to counter with rudder input, but no causal analysis or lessons were included.