The investigation could not determine the exact reason for the accident, but suspected the insufficient meteorological information given to the crew, failure of the ground equipment, and the atmospheric effects on the ADF indicator.
Os investigadores non puideron determinar a razón exacta do accidente, pero sospeitaron da información meteorolóxica insuficiente proporcionada á tripulación, do fallo no equipamento de terra, e os efectos atmosféricos no indicador ADF.