What happened
During the landing rollout, the aircraft began to veer from the centerline. The nose of the airplane started oscillating left and right, prompting the instructor pilot to take control of the aircraft to straighten the nose and continue the rollout.
As the aircraft decelerated, it began moving toward the right side of the runway. The instructor applied left rudder in an attempt to correct the direction; however, despite applying and holding full left rudder, the instructor determined that a runway excursion was inevitable. To avoid further uncontrolled movement, the instructor released the left rudder pedal with the intention of stopping the aircraft on the dirt adjacent to the runway.
During this maneuver, the aircraft struck a taxiway sign with its lower right wing. The impact caused the airplane to spin around and resulted in substantial damage to the lower wing spar.
Findings
- The aircraft departed the right side of runway 22R.
- The instructor's attempt to stop on the dirt led to a collision with an unseen taxiway sign.