The cargo aircraft was enroute from San Juan Luis Munoz Marin Airport Puerto Rico to Saint Kitts Golden Rock Airport at 10,000ft when it lost engine power on Wednesday August 12.
According to Flightaware flight tracker the aircraft started a 600-800ft per minute descent starting at 11:39 local time and continued until it struck the water about 1/2 mile off the shore of Saba.
The pilot was the only person onboard and is in stable condition at a local hospital.