The 737 was slightly damaged and managed to land safely at Malabo, but the HS-125, after remaining airborne for almost an hour with the crew unresponsive, eventually crashed into the ocean, killing all seven people on board.

The two aircraft collided at 18:13 approximately 130 km (80 mi) east of Tambacounda, Senegal, while cruising at an altitude of 35,000 feet (11,000 m) along the same airway in opposite directions, in an area with no radar coverage.

[1] The impact sheared off the top 1-metre (3.3 ft) section of the Boeing's right winglet and was registered on the on-board flight data recorder as a brief oscillation and an uncommanded yaw promptly corrected by the autopilot.

[8] The report also noted that there had been previous incidents involving 6V-AIM in which a significant discrepancy was registered between the altitude indicated by the plane's altimeters and transponder, suggesting a possible fault in the aircraft's pitot-static system that may also have contributed to the accident.

The report also lists as a possible contributing factor a failure by Senegalair's crew and maintenance staff to comply with established procedures, mentioning several previous detected instances.