The Seaplane Baby Clipper NC 16933 Crash took place in Rio de Janeiro on August 13, 1939.

The aircraft, owned by Pan Am, was flying Miami-Rio, with stops in the cities of Antilla, Port-au-Prince, San Pedro de Macorís, San Juan, Port of Spain, Georgetown, Paramaribo, Cayenne, Belém, São Luís, Fortaleza, Natal, João Pessoa, Recife, Maceió, Aracaju, Salvador, Caravelas and Vitória.

After being flight-tested and approved, it would receive tail number NC 16933 from the Civil Aeronautics Authority.

[5] 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 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.