What happened
Approximately three miles west of the airport at St. Thomas, the pilot reported to tower control that the flight was returning to land due to a loss of power from the left engine. The pilot secured the affected engine and began the return process. Upon reaching short final approach, the pilot attempted to lower the landing gear by moving the selector handle down, but the gear did not extend.
Tower personnel advised the pilot that the hydraulic pump responsible for extending both the landing gear and flaps was located on the left engine. Following this information, the pilot executed a go-around and manually pumped the gear down. While transitioning from base leg to final approach, the pilot informed tower control that the right engine had also stopped running. After turning onto final approach, the pilot announced that the aircraft was going into the water.
The investigation
Examination of the aircraft and engines after the incident revealed no evidence of pre-impact failure or malfunction in either the airframe or the propulsion systems.