What happened
At approximately 0400 hours Eastern Daylight Time, Pan Am Flight 201, operating a route from New York to Rio de Janeiro, encountered significant turbulence while cruising at flight level 370. The disturbance occurred in the vicinity of Georgetown, Guyana.
The fasten seat belt sign was illuminated at the time of the incident. Prior to the onset of the turbulence, the captain had announced over the public address system that the seat belt sign was on. Despite these precautions, several passengers seated in row 50 sustained injuries during the event.
The investigation
No specific mechanical examination or technical analysis is detailed in the provided source material regarding this incident.