Date & Time: Jul 25, 2009 at 1805 LT
Type of aircraft:
Ilyushin II-62
Operator:
Registration:
UP-I6208
Survivors:
Yes
Schedule:
Tehran - Mashhad
MSN:
19 51 5 2 5
YOM:
9
Flight number:
IRX1525
Country:
Iran
Region:
Asia
Crew on board:
17
Crew fatalities:
11
Pax on board:
156
Pax fatalities:
5
Other fatalities:
0
Total fatalities:
16
Aircraft flight hours:
13573
Aircraft flight cycles:
3987
Circumstances:
After touchdown on runway 13L in Mashaad, the four engine aircraft did not decelerate as expected and overran. It then struck a concrete wall located 820 meters further on and came to rest. Eleven crew members and five passengers were killed while thirty other people were injured. The front part of the aircraft was destroyed and it came to rest on its tail.
Probable cause:
It is understood that the crew adopted a wrong approach configuration with an excessive approach speed. With a total weight of 93,7 tons, the aircraft should land at a speed of 275 km/h. Investigations determined that the aircraft landed at a speed of 325 km/h past the runway threshold and the flight engineer failed to activate the thrust reverser after touchdown, which was considered as a contributory factor.