Loss of Both Right Engines During Climb from Luxembourg to Kano (5N-MAS)

Flight Details and Initial Incident On 07.14 hrs, the aircraft departed Luxembourg aerodrome under an IFR flight plan, bound for Kano, Nigeria, carrying freight. The peak load was 150 tonnes, comprising 38 tonnes of freight and 116,000 pounds of fuel. The crew consisted of a captain, first officer, and flight engineer, with two passengers: a maintenance man and a cargo supervisor. While climbing from flight level 290 to 330 over the Drôme province in turbulent IMC conditions, the aircraft experienced severe turbulence and a double bang. It suddenly rolled right, and the captain disengaged the autopilot to maintain control. Fire warnings for engines 3 and 4 sounded, and the throttles for these engines moved forward on their own. A cabin depressurization warning also activated and continued intermittently until landing.