TCAS query
Here's a question.....
How would TCAS resolve the following scenario?
Me in a Boeing on long(ish) final say at 6000'. The base of controlled airspace is 5000'.
My mate in a high performance aerobatic aircraft with mode C transponder - he pulls a vertical manoeuvre ahead and below me with an instantaneous climb rate in excess of 5000 fpm.
What now?
I think it might be an issue and have with reservations advised him to squawk 7004 without mode C ('cos I know he's a good bloke and won't bust airspace)
Would be grateful if anyone has any thoughts on this.......