Not sure which is the active thread, but anyway, I don't agree, Mr Rudderman.
I still am not sure I'm awake, but the device is bizarre. Used for spinning students, okay, I'd go along with that, but to carry it for the life of the aircraft in normal circumstances is bewildering. And the explosive bits? Oh, my.
Clearly, just having it there has made him think about its use while he might well have been better served by planning an engine-out landing. And that's another thing - just how many dead cuts do we see these days?
Right through my training on Tigers, Austers and Chipmonks, I don't recall a single failure in any of the three clubs I belonged to. And come to think of it, not one since. My Rallye RR engine never missed a beat night or day for months. It will be interesting to see if the oil indication really did preceded an oil pressure failure.
It looks a nice little aircraft, shame to see its demise.