The DC-2, named “Gaai” operated on a passenger service from Milan, Italy to Amsterdam, the Netherlands. The aircraft took off at 11:36 hours, bound for Frankfurt, Germany, which was the next planned stop. Cruising at 5000 m altitude, ice accretion forced the crew to descend. At 3000 m the flight was out of icing conditions. However the aircraft was now flying between clouds shrouded mountains. Attempting to navigate visually, the flight continued at low altitude. Likely the crew entered the wrong mountain pass. They circled a valley, looking for a way out but low clouds and rain made it very difficult to continue flight. The captain likely decided to perform a gear-up forced landing in the valley. Flaps were selected down and engine power was decreased. In a left hand turn the aircraft stalled and impacted the ground. The four crew members and the nine passengers died.