Accident Overview
On a scheduled service from São Pedro to Ponta do Sol, normally operated by a TACV Twin Otter, the assigned aircraft was unserviceable due to technical problems. TACV consequently leased a Dornier DO228 from the Cabo Verde Coast Guards (Guarda Costeira de Cabo Verde) to operate the flight.
Flight Details
The aircraft departed São Pedro Airport for a 13-minute flight to Ponta do Sol-Agostinho Neto Airport, located on the north coast of Santo Antão Island. While approaching the destination, the crew was informed about poor weather conditions. Visibility was below minimums, prompting the crew to decide to return to São Pedro Airport.
Accident Sequence
A few minutes later, while cruising in limited visibility due to rain falls, the aircraft struck the slope of a mountain located in the center of Santo Antão Island. The impact destroyed the aircraft.
Occupants and Fatalities
All 18 occupants were killed. Among the deceased were three Austrian citizens and two French citizens.
Probable Cause
The official investigation determined the probable cause to be controlled flight into terrain after the crew descended below the minimum safe altitude in instrument meteorological conditions (IMC).