A flight scheduled to arrive at Calgary International Airport Wednesday evening made an emergency landing in Iqaluit.

British Airways flight BA103 departed London’s Heathrow Airport at 6:29 p.m. local time but the Boeing 787-9 Dreamliner made an unscheduled stop at Iqaluit Airport in Iqaluit, Nunavut where emergency vehicles awaited the aircraft.

The passengers will spend the night in Iqaluit as the airline has scheduled a flight from Iqaluit Airport to Calgary International Airport on Thursday.

The wife of a passenger on the flight, who asked not to be identified, says her husband was informed the aircraft had experienced an undisclosed mechanical issue.

The flight will resume on Thursday and should touch down just after 2:00 p.m.