MAN confirmed the outage in a tweet shortly after 11am, warning the issue was affecting some of its processes – notably check-in.
Despite introducing contingency measures, the airport acknowledged the impact of the glitch on Terminal 1 in an update shared at around 12.30pm.
"Due to the outage we are experiencing, we are aware Terminal 1 is currently much busier than usual due to delays to the check-in process in particular," said the airport.