https://www.routesonline.com/news/38...as-of-28dec17/
The usual decreases for Ramadan although some are permanent such as Dublin - I thought the 380 was going to start or is this in preparation with both flights going three class with the next step the 380 on the lunchtime flight?
Manchester will see the 77W on EK21/22 for around six weeks with BCN and DUS getting the same.
I assume NCL and BHX will get three class aircraft during the period as even with the best will in the world 615 seats on EK39 during May and June is going to be a challenge other than the May school holiday.
ssflyer
Since mid October only one three class A388 @ BHX I believe which was around the snow closures at BHX so it has reduced on the BHX route since the demise of EK41 (as you would hope) but you appear to be right that the spare aircraft it does appear that they are mainly 3 class but they do dominate the fleet compared to the two class.
Although saying that EK found a couple of two class A388's this week for MAN on EK21 but no doubt load related at this time of year.