What happened
On August 7, 1993, at approximately 19:40 local time, a Beechcraft F 33 A, registration PT-OMA, crashed near a farm in Luiz Alves, Goiás. The flight originated from the Aeródromo Nacional de Aviação in Goiânia.
The aircraft arrived at its destination during the night under visual flight conditions, but the target landing site—an unregistered and uncertified dirt strip—lacked any lighting or navigational aids. On a moonless night, the pilot established radio contact with another aircraft parked on the field to request altitude and altimeter setting information. During the descent and landing maneuvers, the aircraft entered an abnormal attitude and struck trees before impacting the ground. The collision triggered an explosion and subsequent fire, which destroyed the aircraft. The pilot and two passengers sustained fatal injuries and died at the scene.
The investigation
CENIPA investigators examined the wreckage and the operational circumstances of the flight. Due to the extreme destruction of the aircraft, technical examinations of the engine and flight systems were not possible. The investigation focused on the pilot's credentials, the flight planning, and the characteristics of the landing site.
Investigators found that while the pilot's medical certificate was valid, his technical qualification (CHT) and IFR rating had both expired earlier in 1993. Furthermore, the pilot had planned a mission to an uncertified strip without a filed flight plan, and the arrival time was such that the landing occurred in total darkness, despite the pilot's previous experience at the location.