Spin-off from the pneumatics towards air-conditioning.
After engine failure on a packs-off departure: Once MCT is set, do you put both PACK switches on, or only the one for the live engine? As there is no AIB guidance, what is your best practice? Any downside to either of the options available?
For the moment, my choice is to put both PACKs on as early as practicable:
- no need to evaluate stuff
- recovers all the options that might become available or needed later
- come back from the "green" PROC to a configuration that was assumed when ABN PROC and ECAM designers did their work.