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Last updated: 19 January 2022
Statuts:Enquête Officielle
Date:lundi 18 janvier 1960
Heure:22:19
Type/Sous-type:Silhouette image of generic VISC model; specific model in this crash may look slightly different
Vickers 745D Viscount
Compagnie:Capital Airlines
Immatriculation: N7462
Numéro de série: 217
Année de Fabrication: 1957
Heures de vol:9247
Moteurs: 4 Rolls-Royce Dart 510
Equipage:victimes: 4 / à bord: 4
Passagers:victimes: 46 / à bord: 46
Total:victimes: 50 / à bord: 50
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:11 km (6.9 milles) ENE of Charles City, VA (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Washington-National Airport, DC (DCA/KDCA), Etats-Unis d'Amérique
Aéroport de destination:Norfolk Municipal Airport, VA (ORF/KORF), Etats-Unis d'Amérique
Numéro de vol: 20
Détails:
En route from Washington to Norfolk at an altitude of 8000 feet in icing conditions, two engines failed. While descending to a lower altitude, the remaining two engines also failed and the propellers autofeathered. The crew tried to restart the engines and put the aircraft into a dive trying to drive the propellers out of the feathered position as they were not able to unfeather them normally. Eventually they managed to restart engine no. 4. Applying full power to this engine caused the Viscount to enter a circling descent until it crashed into trees with almost no forward velocity.

Probable Cause:

PROBABLE CAUSE: "The accident was attributed to the delayed arming of the engine ice protection systems while flying in icy conditions, resulting in the loss of engine power and attendant electrical energy required to unfeather propellers and relight sufficient engines to maintain flight."

Sources:
» ICAO Circular 64-AN/58 (100-107)


Opérations de secours
Capital Airlines changed the emergency checklist by deleting the phrase 'descend to a warmer climate for relight' and instructed pilots that engine restart could be accomplished at any height, providing that the correct procedures were followed.

Photos

photo of Vickers-745D-Viscount-N7462
accident date: 18-01-1960
type: Vickers 745D Viscount
registration: N7462
photo of Vickers-745D-Viscount-N7462
accident date: 18-01-1960
type: Vickers 745D Viscount
registration: N7462
 

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 Washington-National Airport, DC et Norfolk Municipal Airport, VA est de 228 km (143 miles).
Accident location: Approximate; accuracy within a few kilometers.

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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Vickers Viscount

  • 445 built
  • 30ème loss
  • 17ème accident fatal
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 Etats-Unis d'Amérique
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