I worked on the 57 when I was stationed at Plattsburgh AFB, NY. Awesome engine and runs like a bat out of hell. When it breaks, it breaks hard. Water injection system failure is a total teardown and rebuild from the diffuser case back.

The engine has a couple borescope ports. I would also use the igniter plug ports and check the combustion chamber, combustion cans. If you have a flex scope you could run it thru the front of the core and do a blade inspection. Doesn't take much to FOD a 57 tho.

It was a really fun engine to work on. We could tear it completely down and replace everything, both N1 and N2 compressors, combustion chamber/cans, T-wheels (turbine). Only thing we couldn't do was zero time the engine. Only depot could do that.

You could mount it on a truck and use it as a wind generator. I know that some companies also use jet engines to generate electrical power. I think the jet boats us helicopter turbine engines.