VH-MFU or VH-OWZ
01915 has been stored in one fashion or another since 1990 when it pranged operated by Bensbach Lodge. I'm not aware of it flying in any form or rego since then. The Aust rego MFU was still available in June 2010 and I have since reserved it to put back on the aircraft when flyable, probably 2011/12. I think MFU has been available for allocation for some considerable time, I recall.
I can't relate what the OWZ reference is. Unless that was reserved by a prior owner for it but never used ?
Placed on the PNG register 2 May 1974 stacks up good, as the log books have a ref saying the P2-MFU designation by April 1976.