Trouble with that accessory drive on the Puma was that it was known to disconnect in flight without actually being asked. I think you then lost the MGB oil pump drive.
As Fareastdriver will know, RAF Pumas had the facility removed around the end of the 1970s after a "few issues".
Shame about the hydraulically powered wheels really, as I'd have loved to put a set of off-road knobbly tyres on my Puma. Mind you, the sloping ground limits weren't so good.
