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Accident
Last updated: 22 October 2017
Statuts:Enquête Officielle
Date:dimanche 5 mars 1967
Heure:20:07
Type/Sous-type:Silhouette image of generic CVLT model; specific model in this crash may look slightly different
Convair CV-580
Compagnie:Lake Central Airlines
Immatriculation: N73130
Numéro de série: 23
Année de Fabrication: 1952
Heures de vol:16216
Moteurs: 2 Allison 501-D13D
Equipage:victimes: 3 / à bord: 3
Passagers:victimes: 35 / à bord: 35
Total:victimes: 38 / à bord: 38
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:3 km (1.9 milles) SE of Marseilles, OH (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Columbus-Port Columbus International Airport, OH (CMH/KCMH), Etats-Unis d'Amérique
Aéroport de destination:Toledo-Express Airport, OH (TOL/KTOL), Etats-Unis d'Amérique
Numéro de vol: 527
Détails:
Lake Central Airlines Flight 527 departed Chicago, IL for a flight to Detroit, MI with intermediate stops at Lafayette, IN, Cincinnati, OH, Columbus, IN and Toledo, OH. The aircraft arrived at Columbus at 19:35 and took off for Toledo 17 minutes later. About 20:05 the flight was cleared from its assigned cruising altitude of 10,000 feet to descend to 6,000 feet and report leaving 8,000 feet and 7,000 feet. Shortly after commencing the descent, all four prop blades on the no. 2 engines separated. The no. 2 prop blade penetrated the fuselage. While yawing to the right, the fuselage failed along the line of penetrations and the Convair crashed.
When the torque cylinder failed, prop pressure oil was lost, causing the blades to move to low pitch at a rate too rapid for the prop pitch lock to operate effectively. The prop oversped, causing the blades to separate in overstress.

Probable Cause:

PROBABLE CAUSE: "The failure of the right propeller due to the omission of the torque piston nitriding process during manufacture, and the failure of manufacturing quality control to detect the omission."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 12 months
Accident number: NTSB File 1-0001
Download report: Final report


Opérations de secours

NTSB issued 3 Safety Recommendations

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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 Columbus-Port Columbus International Airport, OH et Toledo-Express Airport, OH est de 191 km (120 miles).
Accident location: Exact; as reported in the official accident report.

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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Convair CV-580

  • 182 built
  • 2ème loss
  • The first accident fatal
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 Etats-Unis d'Amérique
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