A Boeing 737-322 operated by SCAT experienced a significant fire incident at Aktau Airport (SCO) in Kazakhstan following a ground fire. The aircraft, flight DV742, arrived from Astana, Kazakhstan, and was prepared for the next flight, DV831 to Mineralnye Vody, Russia. A fire erupted in the forward fuselage, originating in the front luggage hold, spanning STA 380 to STA 440 and between S-24 R and S-18 R stringers. The fire was caused by the spontaneous combustion of an oxygen hose, used for filling the aircraft with pressurized oxygen, due to a disturbance in a fine dust environment.A Boeing 737-322 operated by SCAT experienced a significant fire incident at Aktau Airport (SCO) in Kazakhstan following a ground fire. The aircraft, flight DV742, arrived from Astana, Kazakhstan, and was prepared for the next flight, DV831 to Mineralnye Vody, Russia. A fire erupted in the forward fuselage, originating in the front luggage hold, spanning STA 380 to STA 440 and between S-24 R and S-18 R stringers. The fire was caused by the spontaneous combustion of an oxygen hose, used for filling the aircraft with pressurized oxygen, due to a disturbance in a fine dust environment.