As the 180s have never been particularly reliable in their whole career I think it would be a better prospect for Grand Central to switch to a full 221 operation once crews are trained.
If they attempt to get the reliability of their 180s back up to something like normal and keep them what is to say it won’t fall back again after a few months? At least the 220/221 fleet is proven more reliable and will have a bigger pool of spares.
They need reliability as at least one of the Bradford returns to London is cancelled EVERY day presently due to no unit available and that’s been the case for most of this year which is hardly encouraging for continued 180 operation long term.
If they attempt to get the reliability of their 180s back up to something like normal and keep them what is to say it won’t fall back again after a few months? At least the 220/221 fleet is proven more reliable and will have a bigger pool of spares.
They need reliability as at least one of the Bradford returns to London is cancelled EVERY day presently due to no unit available and that’s been the case for most of this year which is hardly encouraging for continued 180 operation long term.