The board concluded that the 37° turn was executed by the navigator using the autopilot's Doppler navigation mode, which when set maintained the desired heading while making corrections for wind drift. The navigator performed this turn after he saw the VOR signal indicating that the aircraft had intercepted the Maputo VOR 45° radial, the compass direction from Maputo on which the crew intended to turn and approach for a landing on runway 23. However the turn actually put the aircraft on a path following a 45° radial from the VOR beacon at Matsapa Airport, Swaziland.