411A
With respect, the comment about Europe and TCAs is b*ll*cks. To mandate any equipment in Europe, there is a 7 year lead in time between advising industry and the legislation being passed. That's the law. So given that, Europe obviously accepted the principle of ACAS at least 7 years ago.
Same with the requirements for RNAV. In that case, they did however rush through the acceptance of GPS as a means of accomplishing RNAV (or more precisely BRNAV) under intense political pressure from operators.
I also think you'll find that until very recently there was no guarantee of service provision of GPS by the US military, or that it would continue to be provided for any specific time period to civil users. So why would any authority lead operators down a path to equip with a piece of kit with no guarantees ?? Common sense says that they wouldn't. I'd love to see the beancounters accept the cost benefit analysis for that kind of situation !! As it now stands, there are assurances so I'm sure that things will gather pace in Europe, but in accordance with the laws and processes that are in place.
RevStar
10W, ASAS (Automatic Separation Assurance System), using ADS-B, will NOT be a replacement for TCAS.
Erm I didn't think I said it would replace it, I said it was an alternative. Subtle difference
It is more likely to appeal to those operators who can use it for other things but are not mandated to carry ACAS, e.g. freight dogs.
------------------
10 West
UK ATC'er
[email protected]