UPS Airlines Flight 6 was a scheduled international cargo flight operated by UPS. On September 3, 2010, the Boeing 747-400F flying the route between Dubai, United Arab Emirates, and Cologne, Germany, developed an in-flight fire, which caused the aircraft to crash, killing both crew members, the only people on board. It was the first fatal air crash for UPS Airlines. The accident prompted a re-evaluation of safety procedures protecting airliners from cockpit smoke.