People start panicing about rotor bladeless ground runs. The Puma series have an accessory drive function that is available if the customer wants it. It disconnects No 1 engine from the MRG but still enables it to run No1 Alternator and No 1 Hydraulics. Its a spin off from the Fred Karno attempts to have a self-propelled undercarriage.
I was asked to do a run on a 332 with the rotors removed as it was in storage and needed to be run. The engineers were concerned about rotor overspeed so I had a long briefing warning me about how fast the rotor would speed up without any blades on.
About twenty years previously I had done runs in accessory drive. The engineer was sitting beside me as I started the engine and it settled at ground idle.
When I slammed the governer lever into the flight gate his face was a absolute picture.