Back in the days I operated in Africa we had two Antonov 32B's an uprated version of the AN24 (bigger engines). They are tanks. Where we use hat sections and L stringers, they use extrusions, partly due to strength and partly due to poor quality aluminum. The aircraft would come from Kiev new with crew (6 man crew, pilot, co-pilot, engineer, navigator, plane captain, load master) for $650 per hour + fuel + per diem (included crew salaries in the 650). The aircraft would work for 1,000 hours with just turn maintenance, heck the tires where something like 60 ply and would look like balls of string before they changed them.
After 1,000 hours we would send them back to Kiev, where they would change the engine hot sections and do a phase inspection on the airframe. At 2,000 hours it would return again, where they would literally throw away the engine and prop and do more maintenance. At 4,000 hours they would retire the airframe and we would get a new airplane. The Turbines are tough, they actually cast the T wheels with the blades as a unit! They have very loose tolerances and burn prodigious amounts of fuel. Additionally they use gallons of oil per hour, vice less than a cup on a western turbine.
They are tough fuel guzzling flying tanks that need a cast of thousands to fly them, but they are cheap. They have excellent load and speed. The ramp not only goes down, but can articulate and retract below the belly so a truck can go right up to the cargo floor, to be offload by the crane that runs on an I beam the full length of the fuselage cargo area. They will cook the passenger's heads in flight and freeze their feet. You MUST where ear plugs in the cabin or you will be deaf.