Accident Sequence
Following an uneventful flight from Kish Island, the aircraft landed by night on runway 29L at Tehran-Mehrabad Airport. After touchdown, the aircraft encountered technical difficulties and was unable to stop within the remaining distance. It overran the runway, went down an embankment, and came to rest in the Kan River canal located about 200 metres from the runway 11R threshold.
Damage
All undercarriage as well as engine number 3 were torn off. The aircraft was written off.
Casualties
Three passengers died while 50 others were injured.
Probable Cause
The exact cause of the accident is unknown. Nevertheless, it is believed that the aircraft suffered a gear failure or tyre burst after touchdown.