Aer Lingus A321 EI-CPE operated EI168 Dublin – London Heathrow this afternoon in order to operate an additional London Heathrow – Shannon rotation as EI2389/EI2388. The aircraft then operated EI179 London Heathrow – Dublin. This pattern had been scheduled for an A320 but the larger aircraft was used to help clear the backlog from yesterday’s EI387 London Heathrow – Shannon cancellation.