What happened
After unloading passengers at the FBO, the pilot began preparations to return to his home airport. During the unloading and pre-takeoff phases, the pilot became distracted and failed to secure the latch on the front cargo door.
During the takeoff roll, the forward nose cargo door opened. In response, the pilot initiated an aborted takeoff. Due to a wet runway, the aircraft experienced hydroplaning, which hindered the ability to stop within the paved surface. The aircraft overran the end of the runway and traveled approximately 200 yards before colliding with a fence. The sequence ended when the aircraft came to rest in a canal. The pilot was not injured.
Findings
The investigation determined that there were no mechanical malfunctions or failures involving the airframe or engine prior to the impact.