What happened
On May 18, 2003, an EMB-8/10C SENECA, registration PT-ERX, was engaged in an illegal drug trafficking flight traveling from Tucumã, PA, toward the region between Bauru and Jaú, SP. The aircraft was equipped with an unapproved internal fuel kit consisting of aviation gasoline canisters used to pump fuel into the main tanks during flight, a modification intended to nearly double the aircraft's range.
After delivering the illegal cargo, the aircraft departed for Goiânia, GO. During the cruise phase, near the border of São Paulo and Minas Gerais in the municipality of Guaraci, SP, a fire ignited within the cockpit. As the aircraft crossed the Rio Grande river, the mechanic on board jumped from the plane and fell into the water, where he subsequently disappeared.
Witnesses observed the aircraft emitting heavy smoke and performing an extremely steep left turn, likely in an attempt to reach a nearby grass airstrip for an emergency landing. The aircraft entered a vertical dive and struck the ground at an angle of approximately 90 degrees. The pilot died instantly upon impact, and the aircraft was destroyed. The mechanic's body was recovered six days later in the river.
The investigation
CENIPA's investigation established that the aircraft was operating without an approved flight plan and was utilizing an unapproved, non-homologated fuel system. Investigators noted that the fire may have been triggered by an electrostatic spark or a malfunction in the electric motor used to pump fuel from the auxiliary canisters. The investigation also confirmed the illegal nature of the operation, as corroborated by federal police intelligence.
Findings
- The aircraft was equipped with an unapproved fuel kit designed to extend autonomy.
- An in-flight fire occurred, likely caused by an electrical spark related to the auxiliary fuel system.
- The pilot attempted an emergency landing on a grass strip, resulting in a high-angle, vertical impact.
- Deficient supervision by the aircraft owner, who authorized both the illegal modification and the irregular flight operation, was a contributing factor.