On May 23, 2006, a De Havilland DHC-6 Twin Otter (registration S9-BAL) operated by Air São Tome e Principe was involved in an aviation accident near Santo Antonio, São Tomé and Principe during landing or approach. 4 people were killed. Investigators recorded the probable cause as: The aircraft lost control during its approach to the runway, leading to a crash into the sea. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).
A twin-engine aircraft crashed into the sea during an approach to runway 29, resulting in the deaths of all four people on board.
What happened
During a scheduled training mission, a twin engine aircraft departed from Santo Antonio Airport. The flight was being conducted by a crew consisting of four pilots. As the aircraft was performing an approach to runway 29, the flight became unstable and went out of control.
The aircraft subsequently impacted the ocean a short distance from the coastline. There were no survivors of the impact, as the accident resulted in four fatalities.
Findings
Investigation details regarding the specific mechanical or operational failures are not yet finalized, though the primary factor in the loss of control occurred during the final approach phase of the flight.
Probable cause
The aircraft lost control during its approach to the runway, leading to a crash into the sea.