I wonder if trying to shut down an engine in an emergency situation could also have resulted in accidental application of the rotor brake.
I doubt it. The Rotor Brake handle is in the roof. The engine controls are on the centre instrument panel or on the collective.
Any radio hams out there - listening in?
As far as I know, the Airwaves/TETRA radios are encrypted, so no listening in.
Will aircraft routinely be returning from missions lower on fuel than previously was the case?
We now regularly get jobs that could require a 40 minute transit if the weather doesn't allow us to go direct, so we have to think carefully about fuel now. Any weather deterioration on the way home could be a major problem. Especially as these jobs are at night.