Flight History
Iran Aseman Airlines Flight IRC 3704 was a domestic scheduled passenger flight. The aircraft, an ATR 72-212 registered as EP-ATS, departed from an unspecified origin and was operating near Yasouj Airport at the time of the accident. The accident occurred at 09:31 local time (06:01 UTC).
Injuries and Damage
All 66 persons on board—including pilots, flight attendants, and passengers—sustained fatal injuries. The aircraft was destroyed.
Aircraft Information
The accident aircraft was an ATR 72-212, a twin-engine turboprop airliner equipped with ice and rain protection systems, ice detection systems, an automatic flight system, weather radar, and a Terrain Awareness Alerting System (TAWS). The aircraft had accumulated flight hours and cycles as recorded in its technical logs.
Meteorological Information
Meteorological data for the Yasouj Airport area and surrounding regions were collected. METAR reports from Yasouj Airport (OISY), Semirom, and Si-Sakht were available. Forecasts from Isfahan and Shiraz airports, along with en-route predictions and regional forecasts, were analyzed. An AIRMET aeronautical alert was also in effect. The investigation used meteorological information from Iran and France.
Flight Recorders
The Cockpit Voice Recorder (CVR) and Solid State Flight Data Recorder (SSFDR) were recovered and read out. Data from these recorders provided information on flight parameters, crew communications, and vertical wind calculations. The French BEA assisted in computing wind data.
Wreckage and Impact
The wreckage was located near Yasouj Airport at coordinates 30°49'25"N, 51°36'56"E. The aircraft was fragmented, and impact marks indicated a high-energy collision with terrain. No fire was reported prior to impact, but post-crash fire occurred.
Organizational Information
The aircraft was operated by Iran Aseman Airlines. The accident was investigated by the Civil Aviation Organization of Iran, Accident & Incident Investigation Board (AAIB).