dany
Easyjet 319's have three different declared MTOW's
64t, 66t or 68t
These are declared MTOW's and are used to take advantage of lower airspace charges. They often change the declared weights of the aircraft so that the entire fleet gets a fair share of short hops and long sectors. Just recently they increased a number of 64t to 68t in order to cope with the disruption that was being experienced.
It takes a while to sort the paperwork out to change the weight and cannot just be done at the drop of a hat. Therefore they do suffer with the problem of needing a 68t aircraft and only having a 64t available.
SW