A BAe Jetstream 31 turboprop aircraft was destroyed in a runway excursion accident at Punta Cana International Airport (PUJ), Dominican Republic. Three of the thirteen occupants suffered minor injuries. The airplane landed on runway 08 and went off the left side of the runway. It crossed the safety zone until it impacted a tree. As a result the fuel tank ruptured and a post-impact fire broke out on the left side of the aircraft. Cause (translated from original Spanish language report): After analyzing the human, material and physical factors, we concluded that the human and material factors were contributors to this accident. Within the human factor, we found that the pilot, being in the final phase to land, observed the fluctuation in oil pressure in the instrument panel of the #2 (right) engine, and when landing applied the reverse to both engines, without waiting for the Beta light, an essential indication to ensure proper operation of the same, responding only the #1 (left) engine, so the aircraft turned abruptly. Within the material factor, we found that the #2 (right) engine had lost a certain amount of oil during flight, and it corresponded to the fluctuation indication on the oil pressure indicator observed by the crew during the final phase of approach.