A transatlantic jet diverted to Shannon Airport this afternoon after the crew declared a medical emergency.
Austrian Airlines flight OS-93 was travelling from Vienna, Austria to Washington in the US at the time.
The flight was just off the Mayo coast around midday when the crew reported they had a passenger on board who had suffered a heart attack.
The crew requested permission to divert to Shannon where airport fire crews were standing by for the Boeing 767 jet when it landed at 12.30pm.
Once the flight reached the terminal ambulance paramedics quickly boarded the aircraft. The passenger was removed to University Hospital Limerick for treatment however his condition is unknown.
The flight continued its journey shortly after 2.00pm.
Last Monday, an 88-year-old man died after the flight on which he was travelling diverted to Shannon. Delta Airlines flight DL-71 was en route from Amsterdam to Atlanta, Georgia at the time.