Incident Overview

Date: Sunday 31 March 1991
Aircraft Type: Vickers 745D Viscount
Owner/operator: Intercontinental de Aviaci¢n
Registration Number: HK-1708
Location: near Medell¡n-Enrique Olaya Herrera Airport (EOH) – ÿ Colombia
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 2
Component Affected: Lower main spar boomLower main spar boom
Category: Accident
A Viscount aircraft experienced a double AI failure during cruise in turbulence at FL160. Control was regained at 4000 feet, and a safe emergency landing was executed at Medellin. Subsequent inspection revealed significant airframe damage, specifically a crack in the lower main spar boom, approximately 35% of its chord. This damage is believed to be attributable to a gear collapse occurring on February 14, 1988.A Viscount aircraft experienced a double AI failure during cruise in turbulence at FL160. Control was regained at 4000 feet, and a safe emergency landing was executed at Medellin. Subsequent inspection revealed significant airframe damage, specifically a crack in the lower main spar boom, approximately 35% of its chord. This damage is believed to be attributable to a gear collapse occurring on February 14, 1988.

Description

The Viscount suffered a double AI failure during cruise in turbulence at FL160. Control was regained at 4000 feet and a safe emergency landing was carried out at Medellin. Inspection after landing showed substantial airframe damage (a.o. a crack in the lower main spar boom extending across 35% of its chord). It is believed that the damage had been caused by a gear collapse February 14, 1988.

Primary Cause

Gear collapse on February 14, 1988Gear collapse on February 14, 1988

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