Mid-air collision over Dakar-Yoff Airport (6V-ADE)

Incident Overview and Aircraft Involved A mid-air collision occurred near YF VOR, a navigation aid associated with Dakar-Yoff Airport. The accident involved a Twin Otter and a NAMC YS-11A-117. The NAMC aircraft, registered C5-GAA, was operated by Gambia Airways on a scheduled flight from Dakar-Yoff Airport to Banjul. It carried 34 passengers and a crew of four. The Twin Otter had completed an uneventful flight from Saint Louis and was cleared to descend to Dakar-Yoff Airport. ## Flight Instructions and Collision The Twin Otter crew was instructed to maintain 3,000 feet over YF VOR. At the same time, the Gambia Airways NAMC YS-11A-117 departed Dakar-Yoff Airport. Its pilots were instructed to climb via radial 140 and maintain 2,000 feet while over YF VOR. When both aircraft reached the YF VOR, they collided. ## Aftermath and Casualties Following the collision, the NAMC YS-11A-117 crew returned to Dakar and landed safely despite the left wing being partially torn off. The Twin Otter entered an uncontrolled descent and crashed in the sea a few kilometers offshore. All three occupants of the Twin Otter were killed.