Hi ReadmyAcars.
No probs about the ADS-B. I just wanted to point out operators are equipping for it. Just a time consuming project with some types.
Although now the mandate date from the white paper (don't quote me but Jan 2013) is approaching...
You have a very valid point with WAAS and GBAS. Although I didn't think GBAS has been abandoned. GRAS was though.
Why has it taken so long for GBAS rollout. A curved ILS (GBAS) type approach at YPPH would be handy for RWY03 off the Julim arrival!
K-Ex.