I'm gald someone else has confirmed AA's interest in the A340-500. When I posted this last week everyone said I was mad for even considering AA would buy Airbus
"AA is a Boeing airline"
"AA is just doing this to bargain with Boeing etc"
KLM 777, you're right, none of the other engine makers contributed to the 777X's cost, which was probably the overriding reason the GE90 became exclusive for the 777X.
However, The selection of the GE90 as sole powerplant does fly in the face of Boeing's prime philosophy in the 777 programme ie "Working Together" - giving the customer what it wants;
(1) The GE90 is the least popular powerplant on the 777-200
(2) No airline has ordered the GE90 for the 777-300
(3) I'd say both the GE90 and PW4000 on the 773 have had their share of problems (I think KAL's 773s were delayed due to PW4000 problems)
The airlines mainly appear to object to the GE90 because most of them have built their fleets around other engines, in the expectation they could continue the onj the 777X with similar engines. They are reluctant to introduce a new engine, plus several important customers have definate preferences (UA for PW, CX for RR) which doesn't help.
The issue is Airbus was always going to have an exclusive engine on the A340 (CFM on 2/300s, RR on 5/600s) and airlines accept this is the best engine for the job - should that be best engine financially for Airbus!?!?! Anyway, Boeing did the same thing but because at the 777's outset it gave it's customers the idea they'd have an engine choice they were upset!
BTW, the 777X would always have had just one engine because in the final negotiations, PW wanted exclusivity, GE wanted exclusivity. RR didn't - but both PW and GE would have withdrawn if another engine was selected besides theirs. So, even if RR/GE or RR/PW engines were selected together, RR would have had de facto
exclusivity because the other manufacturer would have withdrawn!
(I don't work for Boeing/Airbus/RR/PW/GE)