sorry,maybe some mistake in my sentence
I do know the procedure when TA occur
1 PF reduce ND range and monitor ND
2 PNF look out to find the traffic
but the problem is ,I can't find the exactly discribe about the procedure,I checked FCOM and QRH there isn't discribe about what should PF do and what shoule PNF do when TA occur,I want to find the basis about the procedure above
All my best to who tell me where I can find the basis !!