Triadic:
With respect, I'm not sure that your comment about the Twin Pioneer being in Derby over the years 1969/71 is quite right. Checking my log book, my last RFDS time in Derby was March/April 1969, using Beech 65 VH-CFI (I can't recall why FDV wasn't available then, but I do well remember my embarrassment at flogging around the Kimberley in an aircraft festooned with "Rottnest Islander" titles). At that stage the RFDS were using the AIS hangar but I'm fairly sure the Twin Pioneer was gone.
But it's a long time ago, possibly I've got this wrong.
Peter Brook STILL works for the RFDS at Brisbane (I'm still in occasional contact), although he's no longer flying. Jan Ende, of course, is still flying in Perth and we speak often....