Might still end up being economical to replace the aircon & the most dated parts of 158/9s on some routes in the medium term, given we're not meant to be ordering DMUs for much longer, they're not life expired yet and there's no definite idea of what can replace them all yet either. That's assuming the structure holds up - one hopes that as something of a pioneer build they were overbuilt. Was anyone here anything to do with the build?
Personally the longer the 159s last the better, nothing wrong with them for what they do.
Personally the longer the 159s last the better, nothing wrong with them for what they do.