Incident Overview

Date: Friday 11 December 1964
Aircraft Type: de Havilland DH-125-1
Owner/operator: Hawker Siddeley Aviation
Registration Number: G-ARYC
Location: Filton Airport (FZO) – ÿ United Kingdom
Phase of Flight: Landing
Status: Substantial, repaired
Casualties: Fatalities: 0 / Occupants: 2
Component Affected: Hydraulic system of the DH-125 aircraft.Hydraulic system of the DH-125 aircraft.
Category: Accident
A DH-125 production prototype aircraft experienced a hydraulic failure during a flight from Hawarden to Filton. The flight was continued to Filton with unsuccessful attempts to lower the undercarriage by the emergency system. A strip of foam was laid on the runway, prompting a wheels-up landing without flaps. The aircraft landed flat and with a small fire under the centre section due to sliding. Firemen quickly extinguished the fire.A DH-125 production prototype aircraft experienced a hydraulic failure during a flight from Hawarden to Filton. The flight was continued to Filton with unsuccessful attempts to lower the undercarriage by the emergency system. A strip of foam was laid on the runway, prompting a wheels-up landing without flaps. The aircraft landed flat and with a small fire under the centre section due to sliding. Firemen quickly extinguished the fire.

Description

While the first DH-125 production prototype was flying from Hawarden to Filton, with only the two crew aboard, the hydraulic failure warning system operated. The flight was continued to Filton where attempts to lower the undercarriage by the emergency system were unsuccessful. After a strip of’ foam had been laid on the runway, the pilot carried out a wheels-up landing, without flaps. Flaps were not used because the pilot preferred the flatter attitude that he could then maintain for the touchdown, and the aircraft, which was fueled with kerosene, touched down in a flat and level attitude and a small fire appeared under the centre section as it came to rest after sliding about 900 yards. Firemen were on the scene at once and the fire was very rapidly extinguished.

Primary Cause

Hydraulic failure of the DH-125 prototype aircraft.Hydraulic failure of the DH-125 prototype aircraft.

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