Saw this video and thought it was interesting.

https://youtu.be/H2-epzOs8bs

First half is just a flight in an 850 to another airport and routine.

Second half is interesting in that they show techs doing an engine solvent wash. Just the price for owning a turbine, I suppose. I'm kinda surprised they don't run the starter longer on each solvent and wash phase but it obviously gets the job done.

They also show a TBM in a repair jig following a gear-up. That left a mark.

Washes are not generally done for TPE331.

Not sure why PT6 get it and TPE331 don't, but that seems to be the norm.

Mike C.

A spray outfit, near my strip, with Turbine Thrushes did compressor washes often, chemical environment and all.
I was visiting their strip when they hooked up to the wash ring and prepared to wash. The solvent and water tank had a mixer to keep it in suspension, the agitator was broken so the solvent/water was separated. Fortunately it was well tied down, because the guy in the cockpit used start/ignition, instead of motor only...and the fuel control was the solvent in the wash ring....ain't no tellin what the power output was, but it was snortin and straining the tie downs until they could shut off the pump.

This was back when turbines in Ag Planes were rather new...79-80 or so.

Funny that he mentionned the damaged TBM in the jig as most of them land gear up after landing using only takeoff flaps (gear horn wont activate) and thats what he did on landing.

South Florida, my old home base (at FXE now to fit all airplanes into a hangar) and it was interesting to hear him discuss how confusing the taxiing was. We definitely had a lot of mishaps, but the controllers are KPMP are some of the best and nicest around.

We do a compressor wash once a month on our engine because of the proximity to the ocean and the regular trips to the islands.

I seem to remember Bruce B say that they do the same on the TPE's. Maybe he'll chime in.

That guys does a good job with the videos.

Yeah I love bis videos