13 August 1939
| Engine failure resulting in a loss of control|
Guanabara Bay, Rio de Janeiro, Brazil
Pan American World Airways
The 1939 Pan Am Sikorsky S-43 crash occurred on August 13, 1939, when a Pan Am Sikorsky S-43B aircraft en route from Miami to Rio de Janeiro crashed into Rio's Guanabara Bay, killing 14 of the 16 people on board.
1939 Pan Am Sikorsky S-43 crash Wikipedia
The aircraft involved was a three-year-old Sikorsky S-43B airliner registered NC16933. It had first flown in 1936, and had accumulated a total of 3,650 flight hours during its career.
The aircraft took off from Miami on a scheduled international passenger flight to Rio de Janeiro, with many stopovers across the Caribbean and South America. As it neared its destination, the aircraft circled Rio in preparation for a normal approach. As it was circling, however, the left engine lost power, putting the aircraft into a descending left yaw turn. As the yaw grew sharper, the pitch angle also steepened until the aircraft struck a caisson and crashed into Guanabara Bay, about one kilometer from Rio's Santos Dumont Airport. Of the twelve passengers and four crew members, only two passengers survived.