Event Overview
A training flight involving a dual student and an instructor pilot was conducting a simulated forced landing to the runway. The airplane executed a normal touchdown. After rolling approximately 500 feet down the runway, the instructor pilot recognized that the aircraft was not slowing down as expected.
Instructor Actions
The instructor pilot took control of the airplane and applied heavy braking. Realizing that the airplane would not stop on the prepared runway surface, the instructor guided the airplane onto the hard ground surface overrun. The airplane had nearly stopped when a hidden ditch appeared in the path. The instructor pilot reported that there was no time to turn the airplane to avoid the ditch.
Outcome
The airplane dropped into the ditch. An examination of the airplane revealed no anomalies that would have contributed to the reduced deceleration. No further details were provided regarding the aircraft type, registration, operator, or injuries.
Examination
Post-event inspection of the airplane identified no mechanical or system abnormalities.