Turkish Airlines (THY) Flight 5904Wednesday April 7, 1999
The aircraft departed Adana to pick up Turkish pilgrims. The plane crashed 9 minutes after taking off in poor weather conditions. Severe weather probably contributed to the cause of the accident. Pitot anti-icing system was probably not activated because of missed checklist items. The crew failed to recognize the cause of erratic airspeed indications and failed to use other cockpit indications for control and recovery of the aircraft.