COBHC
jet2 are at the limit with just 2 a/c based at BLK is Dalaman and Lanzarote do OK..Ibiza has done OK before.
If Jet2 do expand with more routes and frequency at BLK. then a 3rd aircraft will be needed.
The plans for a 3rd aircraft seemed to be shelved, after FR expanded at MAN, the same time that FR threw their toys from the pram at MAN. Just as the recession was starting also.
Probably BLK will end up with a B757, as a 737 is not that great for Dalaman and 2 routes to the Canaries.