For a long time now nearly all of Australia's civil aircraft have been fitted with mode C transponders. Only a few have TCAS
bushy
For what it is worth the only quantification of Transpoder Equippage for light (<5700kg) aircraft that I have seen showed only
54.8% of all aircraft types (VH a/c, RAA, gliders etc) had Mode C or better.
Source: CASA 2004
Aircraft Equipment Survey page 32.
I cannot vouch for the efficacy of this survey, perhaps the AOPA brigade may care to comment on that.
Scurvy D. Dog
Thanks for the links.
The next ABIT meeting will make interesting reading/viewing in light of
Bob Murphie's comments.