Incident Overview

Date: Monday 5 January 1998
Aircraft Type: Fokker 100
Owner/operator: Iran Air
Registration Number: EP-IDC
Location: 8 km E of Isfahan-Shahid Beheshti Airport (IFN) – ÿ Iran
Phase of Flight: Approach
Status: Substantial, written off
Casualties: Fatalities: 0 / Occupants: 113
Component Affected: Aircraft Control System (specifically the descent control system)Aircraft Control System (specifically the descent control system)
Category: Accident
A Fokker 100 aircraft, en route from Urmia to Tehran, experienced a sudden and uncontrolled descent due to deteriorating weather conditions. The pilot diverted to Isfahan to avoid a landing on Runway 29, resulting in a collision with a dry river bed. The aircraft was subsequently sold to Flight West Airlines.A Fokker 100 aircraft, en route from Urmia to Tehran, experienced a sudden and uncontrolled descent due to deteriorating weather conditions. The pilot diverted to Isfahan to avoid a landing on Runway 29, resulting in a collision with a dry river bed. The aircraft was subsequently sold to Flight West Airlines.

Description

Iran Air Flight 378, a Fokker 100, departed Urmia (Orumiyeh) Airport (OMH) at 18:41 on a domestic flight to Tehran-Mehrabad Airport (THR). The flight was descending towards Tehran when the crew decided to divert to Isfahan. Weather conditions at Tehran were not suitable for a landing on runway 29. Visibility was poor in snow and sleet and there was a 20 knot tailwind. The flight positioned for an approach to runway 26 at Isfahan. There was fog in the area and the airplane descended until it contact a dry river bed, some 8 km short of the runway. The badly damaged aircraft was stored at Isfahan for while. The aircraft was then sold to Flight West Airlines (Australia) for spares and flown to Brisbane via Denpasar, Indonesia by an Antonov 124 on 11 September 1999.

Primary Cause

Poor weather conditions ? including visibility, snow, sleet, and a tailwind ? significantly impaired the aircraft’s ability to maintain control and safely land.Poor weather conditions ? including visibility, snow, sleet, and a tailwind ? significantly impaired the aircraft’s ability to maintain control and safely land.

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