I am an ex RAF (UK) Flight Engineer. During my service life I spent 10 years on the C130K (as the RAF named it), accumulating 3,500 operational hours. The RAF aircraft was a sort of C130H, with T56-A-15 engines, driving a Hamilton Standard 54H60-91 prop. I spent the following years on jet transports including Vickers VC10, and eventually B747's (-200, -300, & -200F), civil variants.
I currently teach and train in a C130 flight simulator.