EN BN,
Works like a treat and I have had the “pleasure” of observing it in real life. Don’t touch anything and it will do its job.
On approach the RA function is inhibited below 900ft, also with an engine failure in a twin.
Airbus also permits you to go above your max altitude for a TCAS manoeuvre.
BUT as always - especially with an Airbus -according to their Golden Rules (and common sense), take over manually if required (rule #4)
