Originally Posted by Mark Gleeson
At the moment the Mk3 set regularly makes an appearance, plus the gap at 8:30 am gives the Mk4 fleet a little bit of space. Times will come down, means 1 extra free Mk4, that simply becomes the Dublin based spare. By the time that happens the Mk4 fleet will be due a overhaul so the spare will be needed.
Mk4 is cleared only for Dublin Connolly/Heuston to Cork or Limerick, for other reasons it can only run Heuston Cork. In theory it can operate anywhere within Ireland
Mk4 is cleared for one other route AFAIK.