(01 Sep 2022, 7:06 pm)L469 YVK wrote Bearing in mind their original purpose for at least first three years until 7541-52 came was X21/X22

While it was, they've now had a solid 5 years constantly popping up on Alnwick routes and are in much better shape now than the 64-plates were even a couple of years ago. The X21/22, while not as demanding as the Alnwick expresses, are still relatively strenuous routes with a mix of flat out running and constant stop/start.

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(01 Sep 2022, 6:51 pm)Storx wrote Aye your probably right there, does anyone know what the 14/64 plates are actually officially going to be allocated to in the long term assuming the 35 and the X14 maybe?

To be honest it'll probably just be a decker pool at this point. 64-plates possibly more likely to be punted onto the 35, but aside from that it's likely much more flexible than it was a few years ago with the rigid MAX/Sapphire allocations - which from an engineering POV is challenging.