Thanks Aye Ess,
I remember BGS for the very reason of it's similar rego. I used to see it and all the other Bushies aircraft on regular trips "up North" after I got a job with another company with a blue paint scheme a few years later.
And that was obviously the incident I remember regarding a Trislander being lost in NSW. I know they didn't fly all that well in cold wet, icy conditions - having to use full carby heat for the donks and no anti-icing gear on the wings, etc. didn't help if you were unfortunate enough to get into that situation
. Wonder what happened to BSG?