Accident Douglas DC-6 N90705, Tuesday 22 August 1950
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Date:Tuesday 22 August 1950
Type:Silhouette image of generic DC6 model; specific model in this crash may look slightly different    
Douglas DC-6
Owner/operator:American Airlines
Registration: N90705
MSN: 42858/9
Year of manufacture:1947
Engine model:Pratt & Whitney R-2800-34
Fatalities:Fatalities: 1 / Occupants: 59
Other fatalities:0
Aircraft damage: Unknown
Location:near Eagle, CO -   United States of America
Phase: En route
Nature:Passenger - Scheduled
Departure airport:Los Angeles International Airport, CA (LAX/KLAX)
Destination airport:Chicago (unknown airport), IL
Investigating agency: CAB
Confidence Rating: Accident investigation report completed and information captured
En route, the no. 3 propeller failed. A propeller blade struck and punctured the fuselage, causing a cabin decompression. A safe landing was carried out at Denver. One passenger who had heart trouble died prior to landing.

PROBABLE CAUSE: "The internal gouging of a propeller blade during the manufacturing process which resulted in a fatigue fracture and subsequent failure during flight."

Accident investigation:
Investigating agency: CAB
Report number: final report
Status: Investigation completed
Download report: Final report


CAB File No.: 1-0109

Revision history:


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