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Date:Wednesday 7 April 1999
Type:Silhouette image of generic B734 model; specific model in this crash may look slightly different
Boeing 737-4Q8
Operator:THY Turkish Airlines
Registration: TC-JEP
MSN: 25378/2732
First flight: 1995-06-09 (3 years 10 months)
Total airframe hrs:11600
Engines: 2 CFMI CFM56-3C1
Crew:Fatalities: 6 / Occupants: 6
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 6 / Occupants: 6
Aircraft damage: Damaged beyond repair
Location:near Ceyhan (   Turkey)
Phase: En route (ENR)
Departure airport:Adana Airport (ADA/LTAF), Turkey
Destination airport:Jeddah-King Abdulaziz International Airport (JED/OEJN), Saudi Arabia
The Boeing 737 departed Adana at 00:36 for a flight to Jeddah to pick up Turkish pilgrims. Weather was poor when the plane crashed, nine minutes after takeoff. The wreckage was found to have been scattered over a 500sq feet area. Also, a 10 m deep hole was found at the point of impact.

Probable Cause:

- 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 of missed checklist items.
- The crew failed to recognize the cause of an erratic airspeed indication.
- The crew failed to use other cockpit indications for control and recovery of the airplane.
- The presence of cabin crew in the cockpit probably distracted the attention of the cockpit crew.

Pitot head issues
Loss of control

» Ergun Ozcan
» Mark Stephenson


photo of Boeing-737-4Q8-TC-JEP
accident date: 07-04-1999
type: Boeing 737-4Q8
registration: TC-JEP

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Adana Airport to Jeddah-King Abdulaziz International Airport as the crow flies is 1730 km (1082 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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