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Accident
Last updated: 16 October 2017
Status:Definitief
Datum:zondag 5 maart 1967
Tijd:20:07
Type:Silhouette image of generic CVLT model; specific model in this crash may look slightly different
Convair CV-580
Luchtvaartmaatschappij:Lake Central Airlines
Registratie: N73130
Constructienummer: 23
Bouwjaar: 1952
Aantal vlieguren:16216
Motoren: 2 Allison 501-D13D
Bemanning:slachtoffers: 3 / inzittenden: 3
Passagiers:slachtoffers: 35 / inzittenden: 35
Totaal:slachtoffers: 38 / inzittenden: 38
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:3 km (1.9 mijl) SE of Marseilles, OH (   Verenigde Staten)
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Columbus-Port Columbus International Airport, OH (CMH/KCMH), Verenigde Staten
Vliegveld van aankomst:Toledo-Express Airport, OH (TOL/KTOL), Verenigde Staten
Vluchtnummer: 527
Beschrijving:
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


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NTSB issued 3 Safety Recommendations

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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Columbus-Port Columbus International Airport, OH en Toledo-Express Airport, OH bedraagt 191 km (120 miles).
Accident location: Exact; as reported in the official accident report.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Convair CV-580

  • 182 built
  • 2e ongeval
  • The first dodelijk ongeval
  • The zwaarste ongeval (toen het plaatsvond)
  • 2e zwaarste ongeval (op dit moment)
» safety profile

 Verenigde Staten
  • 50e zwaarste ongeval (toen het plaatsvond)
  • 89e zwaarste ongeval (op dit moment)
» safety profile