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Last updated: 26 January 2021
Statuts:Enquête Officielle
Date:vendredi 3 juin 1966
Heure:ca 18:35
Type/Sous-type:Silhouette image of generic TRID model; specific model in this crash may look slightly different
Hawker Siddeley HS-121 Trident 1C
Compagnie:Hawker Siddeley Aviation
Immatriculation: G-ARPY
Numéro de série: 2126
Année de Fabrication: 1966-06-03 ()
Heures de vol:1
Cycles:0
Moteurs: 3 Rolls-Royce Spey 505-5
Equipage:victimes: 4 / à bord: 4
Passagers:victimes: 0 / à bord: 0
Total:victimes: 4 / à bord: 4
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:1,6 km (1 milles) SSW of Felthorpe (   Royaume Uni)
Phase de vol: En cours de manoeuvre (MNV)
Nature:Test
Aéroport de départ:Hatfield Airport (HTF/EGTH), Royaume Uni
Aéroport de destination:Hatfield Airport (HTF/EGTH), Royaume Uni
Détails:
HS-121 Trident G-ARPY departed Hatfield at 16:52 to carry out the first of a series of production test flights to qualify for a Series Certificate of Airworthiness. At 18:30, after completing a large part of the tests, the stalling tests were begun. Three approaches to stall were made to check the stall warning and stall recovery systems. The fourth stalling run was made at a height of 11600 ft in landing configuration with the stall warning and recovery systems made inoperative. The Trident entered a superstall with the nose pitched up to 30-40 degrees. The plane turned to the left, the right wing dropped and the plane then went into a flat spin to the right.

Probable Cause:

PROBABLE CAUSE: "During a stalling test decisive recovery action was delayed too long to prevent the aircraft from entering a superstall from which recovery was not possible."

Sources:
» ICAO Circular 88-AN/74 Volume II (86-107)


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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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