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Accident description
Last updated: 30 September 2016
Status:Final
Date:Thursday 12 August 1965
Time:ca 07:00
Type:Silhouette image of generic C46 model; specific model in this crash may look slightly different
Curtiss C-46A-50-CU Commando
Operator:Paraense Transportes Aéreos
Registration: PP-BTH
C/n / msn: 30571
First flight: 1944
Total airframe hrs:27761
Engines: 2 Pratt & Whitney R-2800-51
Crew:Fatalities: 4 / Occupants: 4
Passengers:Fatalities: 9 / Occupants: 9
Total:Fatalities: 13 / Occupants: 13
Airplane damage: Destroyed
Airplane fate: Written off (damaged beyond repair)
Location:near Barra do Bugres, MT (   Brazil)
Phase: En route (ENR)
Nature:Domestic Scheduled Passenger
Departure airport:Cuiabá-Marechal Rondon International Airport, MT (CGB/SBCY), Brazil
Destination airport:Porto Velho Airport, RO (PVH/SBPV), Brazil
Narrative:
The aircraft departed Cuiabá-Marechal Rondon Airport, at 06:21, for Porto Velho Airport with an IFR flight plan. At the outskirts of Barra do Bugres, about 30 minutes after takeoff, the aircraft turned back towards Cuiabá with its left engine on fire. While over Buracao, its left wing and engine broke away from the fuselage and it crashed to the ground out of control.

PROBABLE CAUSE: "The cause of the accident was a structural failure. Bolts of the No. 8 cylinder, left engine, fractured.
Contributing factors were defective fire detection and fire extinguishing systems."

Classification:

Wing failure
Loss of control

Sources:
» ICAO Circular 88-AN/74 Volume I (171-174)


Photos

photo of Curtiss C-46A-50-CU Commando PP-BTH
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Cuiabá-Marechal Rondon International Airport, MT to Porto Velho Airport, RO as the crow flies is 1141 km (713 miles).

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