I just happened to come across the !!!!!!!!!!!!!! site & saw a thread discussing the merits good or bad about having 4 eng planes still being built.
So thought why not have a 'chat' about it here where it can get interesting & amusing
Okay basic stuff. 4 engines good for ETOPS/EDOPS/EROPS etc, smaller size per engine for better installation slung under wing/s. Better redundancies etc.
The 3 Eng concept seems to have died off
Let the games begin.
Wmk2