I hope its OK that that I resurrect this thread from the dead, but I am also on the lookout for an A346 FCOM.
I would be really grateful to anybody who could help me get one or parts of one. All I could find so far is a Virgin Atlantic FCOM, but vol. 3 is missing and also most of the charts.
I would even be willing to send you a USB-stick and and return envelope since I assume it would be a pretty big file.