6 fatalities

Aircraft Crash Near Ceyhan During Positioning Flight to Jeddah (TC-JEP)

Ceyhan, TurkeyFlight

On April 7, 1999, a Boeing 737-400 (registration TC-JEP) operated by Turkish Airlines - THY Türk Hava Yollari was involved in an aviation accident near Ceyhan, Turkey in flight. 6 people were killed. Investigators recorded the probable cause as: The severe weather conditions probably contributed to the cause of the accident, the Pitot static anti-ice system was probably not activated during preparations for flight because the crew failed to follow the pre takeoff checklist, the crew failed to… This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 16 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-11Data APIEditorial standards
Aircraft registered TC-JEP
Aircraft registered TC-JEP. Photo: Stuart Jessup / CC BY-SA 2.0, via Wikimedia Commons

An aircraft crashed near Ceyhan, Turkey, nine minutes after departing Adana Airport for a positioning flight to Jeddah. The accident was not survivable, with probable causes including severe weather and crew errors.

Incident Overview and Flight Details An aircraft departed Adana Airport runway 05 at 0036 local time on a positioning flight to Jeddah, Saudi Arabia, intended to pick up Turkish pilgrims. Nine minutes after takeoff, while climbing to an altitude of 4,000 meters in poor weather conditions, the aircraft nosed down, entered a dive, and crashed in a near-vertical attitude in an open field near Ceyhan, approximately 30 kilometers east of Adana Airport. The aircraft disintegrated on impact, creating a large crater, with debris found at a depth of 10 meters. The accident was not survivable. ## Official Findings and Probable Causes The official investigation identified several factors that contributed to the accident. Severe weather conditions probably contributed to the cause. The Pitot static anti-ice system was probably not activated during preparations for flight because the crew failed to follow the pre-takeoff checklist. The crew failed to recognize the cause of an erratic airspeed indication and failed to use other cockpit indications for control and recovery of the airplane. Additionally, the presence of cabin crew in the cockpit probably distracted the attention of the cockpit crew.