Incident Overview

Date: Sunday 13 April 1947
Aircraft Type: Avro 685 York I
Owner/operator: British South American Airways – BSAA
Registration Number: G-AHEZ
Location: Dakar-Yoff Airport (DKR) – ÿ Senegal
Phase of Flight: Landing
Status: Destroyed, written off
Casualties: Fatalities: 6 / Occupants: 15
Component Affected: Flight plan, pilot’s decision-making, radio communication, and runway lighting.Flight plan, pilot’s decision-making, radio communication, and runway lighting.
Category: Accident
An Avro York plane crashed-landed on its belly following three unsuccessful attempts to land in poor visibility conditions. The fuselage broke up to the rear of the wing. A probable cause was an error in the flight plan, including inaccurate ETA (Estimated Time of Arrival) and an insufficient fuel reserve, leading to a pilot’s failure to execute a diversionary plan. Inadequate runway lighting further exacerbated the situation. Radio communication difficulties between the control tower and the aircraft, coupled with a lack of wireless facilities, contributed to the problem. The crew exhibited nervousness during attempts to land, and the potential for a fuselage below the wing in a forced landing elsewhere was a significant concern. The outdated general aeronautical map for the aerodrome, which lacked a schedule for THIES, was also a contributing factor.An Avro York plane crashed-landed on its belly following three unsuccessful attempts to land in poor visibility conditions. The fuselage broke up to the rear of the wing. A probable cause was an error in the flight plan, including inaccurate ETA (Estimated Time of Arrival) and an insufficient fuel reserve, leading to a pilot’s failure to execute a diversionary plan. Inadequate runway lighting further exacerbated the situation. Radio communication difficulties between the control tower and the aircraft, coupled with a lack of wireless facilities, contributed to the problem. The crew exhibited nervousness during attempts to land, and the potential for a fuselage below the wing in a forced landing elsewhere was a significant concern. The outdated general aeronautical map for the aerodrome, which lacked a schedule for THIES, was also a contributing factor.

Description

The Avro York plane crash-landed on its belly following 3 unsuccessful attempt to land in poor visibility conditions. The belly was split open and the fuselage broke up to the rear of the wing. PROBABLE CAUSE: “Direct Causes: Flight plan (too great errors in the ETA; endurance inexact); Lack of decision on the part of the pilot who, after his second attempt to land, and in view of his insufficient petrol reserve, should have carried out the diversionary plan.; The lighting of the runways was inadequate: There were no approach lights.; There are no wireless facilities for landing in bad visibility at Dakar-Yoff. Contributory Causes: Difficulties in exchange of radio telephony communications between the control tower and the aircraft.; Insufficient knowledge of the English language by the controllers in the tower, according to the Americans and British.; As regards to the crew, there certainly appears to have been a slight nervousness during the attempts to land. The danger to passengers in the case of cabin fuselage below the wing in the event of a forced landing elsewhere than on a runway. Lack of knowledge of THIES by BSAA crews. THIES was given on the old general aeronautical maps but, at the time of the accident, no schedule for this aerodrome has yet been published by the Aeronautical Information Section. This schedule is now available.”

Primary Cause

Pilot error and inadequate planning leading to a failure to execute a diversionary plan.Pilot error and inadequate planning leading to a failure to execute a diversionary plan.

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