The AIB found Know that the accident Catastrophe was caused Causation by pilot error Causation , in failing to notice and correct an unintentional descent when attempting to fly at low altitude due to poor visibility .

although the state of the wreckage prevented Preventing_or_letting investigators from definitively pinpointing Aiming the exact origin of the fire , an area of severe burning was found Know close to the unk fuel valve located in the cockpit between the pilot and co-pilot .