RA Criteria
Well I'm a lowly PPL/IR in the US.
Kind of curious as to the RA criteria in terminal airspace. Here it is pretty routine to have 500 foot separation between VFR piston and transports.
It is much nicer if transport is the one on the bottom!
I had an airbus do an RA a couple of years ago. I was at 9500 assigned and he was restricted at 10000, maybe a mile or two away on converging paths. We were both talking to the approach controller and obviously on discrete codes. He'd be at 250 kts and I was maybe at 150.
I'd reported him in sight, but I think the transport crew were fussing setting up for the approach so didn't scan until they got the RA. Impressive pull up!
Do you guys always have to execute on the RA even with the conflicting traffic in sight? I think the answer must be no .. at least in the US.
How do you know for sure it's the right traffic?