The aircraft took off from São Pedro at 11:42 for the short flight to Agostinho Neto. Thirteen minutes after takeoff, rain and fog covered Santo Antão and placed the arrival airport below VFR minimums. The pilots made the decision to return to São Vicente at 11:56. The aircraft overflew the island of Santo Antão at 12:02, but crashed into the wooded mountainside at an altitude of 1,370 metres (4,490 ft). The aircraft burst into flames, killing all 18 passengers and crew on board.