A transatlantic flight that diverted to Dublin Airport this morning with a technical issue has declared a second emergency.

American Airline flight AA55 made an unscheduled stop at Dublin shortly before midday after the crew reported a pressurisation issue.

The aircraft landed safely but soon after resuming its journey at 4.15pm, the crew declared another emergency reporting the same problem as earlier.

The Boeing 767-300 jet, with 181 passengers on board, touched down at Dublin Airport again.

Emergency services were standing by for the plane.