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Accident
Last updated: 11 December 2017
Statuts:Enquête Officielle
Date:mercredi 6 novembre 1946
Heure:08:45
Type/Sous-type:Silhouette image of generic DC3 model; specific model in this crash may look slightly different
Douglas C-47A-25-DK (DC-3)
Compagnie:KLM Royal Dutch Airlines
Immatriculation: PH-TBO
Numéro de série: 13638
Année de Fabrication: 1944
Heures de vol:1792
Moteurs: 2 Pratt & Whitney R-1830-S1C3-G
Equipage:victimes: 0 / à bord: 5
Passagers:victimes: 0 / à bord: 15
Total:victimes: 0 / à bord: 20
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:près de Shere (   Royaume Uni)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Intern.
Aéroport de départ:Amsterdam-Schiphol International Airport (AMS/EHAM), Pays-Bas
Aéroport de destination:London-Croydon Airport (-/-), Royaume Uni
Détails:
A Douglas C-47A passenger plane, registered PH-TBO, was damaged beyond repair in an accident near Shere, UK. All five crew members and fifteen passengers survived.
The scheduled KLM service had departed Amsterdam-Schiphol International Airport (AMS), the Netherlands on a flight to London-Croydon Airport. It entered the London Control Zone when QBI conditions (compulsory IFR conditions) were in force. When the pilot estimated that he flew over the Croydon MF beacon, he had actually passed it two or three minutes earlier. He continued to fly on a westerly course for three or four minutes until receiving instructions that he was next to land, and that the landing direction was 120 degrees M. The aircraft then began to descend again and after receiving several QDM's the pilot turned on to the course for Croydon. The pilot levelled out at an indicated altitude of 1,200 feet and the undercarriage was lowered. Almost immediately after, whilst
still flying in cloud, the aircraft struck the tops of trees and crashed. The pilot had set the altimeter to the sea level pressure instead of airfield pressure. Consequently the aircraft's height would be about 230 feet lower than that indicated by the altimeter.

Probable Cause:

PROBABLE CAUSE: "Flying into high ground in conditions of low cloud and poor visibility. This must be attributed to errors on the part of the pilot who, preparatory to landing at Croydon Airport in QBI conditions. 1) Failed to navigate his aircraft with sufficient degree of care to avoid high ground when descending through cloud. 2) During the descent misinterpreted the height of the aircraft as indicated by his altimeter."

Sources:
» The Civil Aircraft Registers of the Netherlands / H. Dekker
» WAAS
» Flight International July 17, 1947


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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Amsterdam-Schiphol International Airport et London-Croydon Airport est de 349 km (218 miles).

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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