Who's going to pay for the engine under test?
Old, obsolete, out of hours, not worth refurbish - full power (go-around before someone refers to approach power) - large UAV (WTF is a 'drone'?) and see what happens.
Just so that those not in the trade understand:
The idiots who fly these things in the
wrong place are nothing like aviation modellers. They are in the same bracket as those who point lasers at aircraft. Models need to be built by enthusiasts and are relatively difficult to fly. A 'toy' UAV is computer stabilised and controlled so anyone can fly it accurately. I have no objection to recreational use of them such as taking a pic of your house or self from the air but, unfortunately, they are easy for clowns to obtain and fly.