The preliminary Colombian report indicated that the plane was traveling overweight and with fuel at the limit, and that the pilots mistakenly decided not to make stopovers to refuel at the Alfredo Vásquez Cobo de Leticia or El Dorado of Bogotá airports. In addition, they did not inform air control of the fuel shortage until the last moment. They did not comply with the flight plan, which should not have been approved by the airport authorities.