Incident Overview

Date: Friday 9 July 1999
Aircraft Type: Hawker Siddeley HS-125-1A-522
Owner/operator: Aero Jet Express
Registration Number: XA-TAL
Location: Toluca Airport (TLC) – ÿ Mexico
Phase of Flight: Approach
Status: Destroyed, written off
Casualties: Fatalities: 4 / Occupants: 4
Component Affected: Aircraft AltitudeAircraft Altitude
Category: Accident
A DHL cargo jet experienced a near-miss during approach to Toluca airport. Visibility decreased significantly, leading to a rapid descent. The aircraft impacted a wall approximately 350 meters short of the runway. Investigation suggests the crew may have descended below minimum altitude to achieve visual contact with the ground, potentially due to fog conditions. This was compounded by pilot overconfidence and a reliance on a visual approach, which was not properly executed with instruments.A DHL cargo jet experienced a near-miss during approach to Toluca airport. Visibility decreased significantly, leading to a rapid descent. The aircraft impacted a wall approximately 350 meters short of the runway. Investigation suggests the crew may have descended below minimum altitude to achieve visual contact with the ground, potentially due to fog conditions. This was compounded by pilot overconfidence and a reliance on a visual approach, which was not properly executed with instruments.

Description

The jet was on a flight to Toluca carrying cargo for DHL. Visibility was decreasing from two miles to one mile while on approach. The airplane impacted a 6 feet high wall, approx. 350 m short of the runway 15 threshold. It was considered likely by the investigators that the crew descended below minima in order to obtain visual contact with the ground. Probable cause: “Carelessness of the crew of the altitude of the aircraft, during its final approach, when trying to make visual contact with the runway, in a VMC approach, when the meteorological conditions (fog) imposed an instrument approach (IFR)”. Contributing factors: – continuing a visual approach, when required to be by instruments. – overconfidence of the crew in their experience and ability (pilot with 4669:35 hours total and co-pilot with 2502:45 hours total) – low approach.

Primary Cause

Crew descent below minimum altitude due to fog conditions and a reliance on a visual approach, potentially resulting in a loss of situational awareness and inadequate instrument use.Crew descent below minimum altitude due to fog conditions and a reliance on a visual approach, potentially resulting in a loss of situational awareness and inadequate instrument use.

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