68 Years ago today: On 29 April 1952 a PanAmerican Boeing 377 crashed near Carolina, Brasil; killing all 50 occupants.

Date: Tuesday 29 April 1952
Time: 04:40
Type: Boeing 377 Stratocruiser 10-26
Operator: Pan American World Airways (Pan Am)
Registration: N1039V
C/n / msn: 15939/12
First flight: 1949-09-28 (2 years 7 months)
Total airframe hrs: 6944
Engines: Pratt & Whitney R-4360-B6
Crew: Fatalities: 9 / Occupants: 9
Passengers: Fatalities: 41 / Occupants: 41
Total: Fatalities: 50 / Occupants: 50
Aircraft damage: Damaged beyond repair
Location: 450 km (281.3 mls) SW of Carolina, MA (   Brazil)
Phase: En route (ENR)
Nature: International Scheduled Passenger
Departure airport: Rio de Janeiro-Galeão International Airport, RJ (GIG/SBGL), Brazil
Destination airport: Port of Spain-Piarco Airport (POS/TTPP), Trinidad and Tobago
Flightnumber: PA202

Narrative:
Flight 202 originated at Buenos Aires, destination New York, with en route stops scheduled at Montevideo, Uruguay; Rio de Janeiro, Brazil, and Port of Spain, Trinidad. The flight departed Buenos Aires 18:52 UTC. After a scheduled stop at Montevideo the flight arrived at Rio de Janeiro at 01:05, April 29. The flight departed Rio de Janeiro at 02:43 for a direct off-airways flight to Port of Spain. At 06:16 the flight reported abeam of Barreiras, flying at 14,500 feet under VFR conditions and estimating abeam of Carolina, Brazil, at 07:45 UTC. This was the last known message from the flight. The aircraft was later found to have crashed in dense jungle.

Probable Cause:

PROBABLE CAUSE: “The separation of the no.2 engine and propeller from the aircraft due to highly unbalanced forces, followed by uncontrollability and disintegration of the aircraft for reasons undetermined.”