2 fatalities

Double Engine Failure Off Culebra Island Results in Ditching and Fatalities (N703A)

Culebra Island, Puerto RicoFlight

On June 18, 1971, a Grumman G-21A Goose (registration N703A) operated by Antilles Air Boats was involved in an aviation accident near Culebra Island, Puerto Rico in flight. 2 people were killed. Investigators recorded the probable cause as: Double engine failure in flight for undetermined reason. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 6 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

During a flight from Charlotte Amalie to Fajardo, both engines failed while flying along Culebra Island's coast. The pilot attempted to ditch, but the aircraft crashed offshore and sank, killing two and injuring nine.

Flight and Engine Failure

The aircraft was in transit from Charlotte Amalie to Fajardo, flying along the coast of Culebra Island. Without warning, both engines failed simultaneously. The pilot reacted by reducing altitude and attempting to ditch the airplane on the water. The aircraft then struck the water surface, resulting in a crash that occurred a few dozen yards offshore. Following impact, the airplane sank rapidly.

Injuries and Fatalities

The accident resulted in injuries to nine occupants. Among these, five individuals sustained serious injuries. Additionally, two passengers were killed.

Investigation and Probable Cause

The official investigation into the incident concluded that the probable cause was a double engine failure in flight. The reason for the failure could not be determined.