Incident Overview

Date: Thursday 15 October 1987
Aircraft Type: ATR 42-312
Owner/operator: Aero Trasporti Italiani – ATI
Registration Number: I-ATRH
Location: Conca di Crezzo – ÿ Italy
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 37 / Occupants: 37
Component Affected: Aircraft Control System (specifically, the elevator and pitch trim)Aircraft Control System (specifically, the elevator and pitch trim)
Category: Accident
An ATR 42-300 aircraft crashed near Conca di Crezzo, Italy, due to icing conditions and a loss of control during a descent. The aircraft rolled left and right, resulting in a significant lateral deviation. The pilot initiated anomalous pitch trim movements, leading to a nose-down landing into a mountainous terrain.An ATR 42-300 aircraft crashed near Conca di Crezzo, Italy, due to icing conditions and a loss of control during a descent. The aircraft rolled left and right, resulting in a significant lateral deviation. The pilot initiated anomalous pitch trim movements, leading to a nose-down landing into a mountainous terrain.

Description

ATI flight 460, an ATR 42-300, crashed near Conca di Crezzo, Italy, following a loss of control in icing conditions, killing all 37 occupants. The aircraft took off from Milan-Linate (LIN) for a flight to K”ln (CGN). Icing conditions existed. Fifteen minutes after takeoff, while climbing through FL147 in IAS hold mode (constant speed set at 133 kts) the aircraft rolled left and right. The plane rolled 41 degrees right, 100 degrees left, 105 degrees right and 135 degrees left. During pull up three anomalous pitch trim movements set the elevator to pitch down, preventing recovery. The ATR crashed nose down into a 700 m high mountain following an uncontrolled descent.

Primary Cause

Icing conditions and a loss of control during a descent.Icing conditions and a loss of control during a descent.

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