Incident Details
The pilot reported that rain had just fallen on the 2,695-foot-long runway intended for landing. During the landing roll, moderate braking was applied, but the pilot did not perceive sufficient deceleration. The pilot's knowledge of the airport indicated a 150-foot drop off at the runway's end.
Pilot Actions
As the runway end approached, the pilot elected to turn left off the runway and used the right engine to assist the turn. The airplane veered left off the runway onto a gravel area.
Damage
Upon entering the gravel area, the right main landing gear collapsed. This resulted in substantial damage to the outboard edge of the aileron, as well as damage to the landing gear and the top of the inboard wing.
Additional Information
The pilot stated that there were no preimpact mechanical malfunctions or failures.