Tehran – Yasuj

Iranian ATR72 aircraft registered EP-ATS operated by Iran Aseman Airlines was assigned to perform a domestic scheduled passenger flight from Tehran to Yasuj on 07:55 local time. The aircraft took off from Tehran Mehrabad International Airport (0III) at 04:35 UTC. (08:05 LMT) and the flight was the first flight of the day for aircraft and the crew. The cruise flight was conducted at FL210 on airway W144 and no abnormal situation was reported by the crew and the flight was continued on Tehran ACC frequency till the time the first officer requested latest weather information of the destination by contact to Yasuj tower then requested to leave FL210 to FL170 from Tehran ACC. When the aircraft was descending to FL170 and crew calling YSJ tower the aircraft descending was continued to altitude of 15000 ft. The aircraft was approved to join overhead of the airport and perform “circling NDB approach “to land on RWY 31 at the destination aerodrome. Finally the aircraft collided with a peak lee of DENA Mountains about 8.5 miles at North far from the airport and involved accident on 06:01 UTC. The aircraft was completely destroyed as a result of collision with the mountain at the altitude of approximately 13,300 ft.

Flight / Schedule

Tehran – Yasuj

Aircraft

ATR72-200

Registration

EP-ATS

MSN

391

Year of Manufacture

1993

Date

February 18, 2018 at 09:31 AM

Type

CRASH

Flight Type

Scheduled Revenue Flight

Flight Phase

Flight

Crash Site

Mountains

Crash Location

Mt Dena Isfahan

Region

Asia • Iran

Coordinates

32.6877°, 51.6854°

Crash Cause

Human factor

Narrative Report

On February 18, 2018 at 09:31 AM, Tehran – Yasuj experienced a crash involving ATR72-200, operated by Iran Aseman Airlines, with the event recorded near Mt Dena Isfahan.

The flight was categorized as scheduled revenue flight and the reported phase was flight at a mountains crash site.

66 people were known to be on board, 66 fatalities were recorded, 0 survivors were identified or estimated. This corresponds to an estimated fatality rate of 100.0%.

Crew on board: 6, crew fatalities: 6, passengers on board: 60, passenger fatalities: 60, other fatalities: 0.

The listed crash cause is human factor. Iranian ATR72 aircraft registered EP-ATS operated by Iran Aseman Airlines was assigned to perform a domestic scheduled passenger flight from Tehran to Yasuj on 07:55 local time. The aircraft took off from Tehran Mehrabad International Airport (0III) at 04:35 UTC. (08:05 LMT) and the flight was the first flight of the day for aircraft and the crew. The cruise flight was conducted at FL210 on airway W144 and no abnormal situation was reported by the crew and the flight was continued on Tehran ACC frequency till the time the first officer requested latest weather information of the destination by contact to Yasuj tower then requested to leave FL210 to FL170 from Tehran ACC. When the aircraft was descending to FL170 and crew calling YSJ tower the aircraft descending was continued to altitude of 15000 ft. The aircraft was approved to join overhead of the airport and perform “circling NDB approach “to land on RWY 31 at the destination aerodrome. Finally the aircraft collided with a peak lee of DENA Mountains about 8.5 miles at North far from the airport and involved accident on 06:01 UTC. The aircraft was completely destroyed as a result of collision with the mountain at the altitude of approximately 13,300 ft.

Aircraft reference details include registration EP-ATS, MSN 391, year of manufacture 1993.

Geospatial coordinates for this crash are approximately 32.6877°, 51.6854°.

Fatalities

Total

66

Crew

6

Passengers

60

Other

0

Crash Summary

Iranian ATR72 aircraft registered EP-ATS operated by Iran Aseman Airlines was assigned to perform a domestic scheduled passenger flight from Tehran to Yasuj on 07:55 local time. The aircraft took off from Tehran Mehrabad International Airport (0III) at 04:35 UTC. (08:05 LMT) and the flight was the first flight of the day for aircraft and the crew. The cruise flight was conducted at FL210 on airway W144 and no abnormal situation was reported by the crew and the flight was continued on Tehran ACC frequency till the time the first officer requested latest weather information of the destination by contact to Yasuj tower then requested to leave FL210 to FL170 from Tehran ACC. When the aircraft was descending to FL170 and crew calling YSJ tower the aircraft descending was continued to altitude of 15000 ft. The aircraft was approved to join overhead of the airport and perform “circling NDB approach “to land on RWY 31 at the destination aerodrome. Finally the aircraft collided with a peak lee of DENA Mountains about 8.5 miles at North far from the airport and involved accident on 06:01 UTC. The aircraft was completely destroyed as a result of collision with the mountain at the altitude of approximately 13,300 ft.

Cause: Human factor

Occupants & Outcome

Crew On Board

6

Passengers On Board

60

Estimated Survivors

0

Fatality Rate

100.0%

Known people on board: 66

Operational Details

Schedule / Flight

Tehran – Yasuj

Flight Type

Scheduled Revenue Flight

Flight Phase

Flight

Crash Site

Mountains

Region / Country

Asia • Iran

Aircraft Details

Aircraft

ATR72-200

Registration

EP-ATS

MSN

391

Year of Manufacture

1993