Accident Convair CV-580 N73130, Sunday 5 March 1967
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Date:Sunday 5 March 1967
Type:Silhouette image of generic CVLT model; specific model in this crash may look slightly different    
Convair CV-580
Owner/operator:Lake Central Airlines
Registration: N73130
MSN: 23
Year of manufacture:1952
Total airframe hrs:16216 hours
Engine model:Allison 501-D13D
Fatalities:Fatalities: 38 / Occupants: 38
Other fatalities:0
Aircraft damage: Destroyed, written off
Location:3 km SE of Marseilles, OH -   United States of America
Phase: Take off
Nature:Passenger - Scheduled
Departure airport:Columbus-Port Columbus International Airport, OH (CMH/KCMH)
Destination airport:Toledo-Express Airport, OH (TOL/KTOL)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
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: "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:
Investigating agency: NTSB
Report number: DCA67A0005
Status: Investigation completed
Duration: 1 year 1 month
Download report: Final report



  • 17th worst accident in 1967
  • 2nd worst accident of this aircraft type
  • worst accident of this aircraft type at the time


Revision history:


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