An Air Canada Boeing 777 service bound for Toronto declared a mid-air emergency shortly after departing London Heathrow, forcing a swift return to the airport. Flight AC853 took off at 8:34am on Saturday, May 2, and climbed to its cruising altitude of 34,000 feet before the crew issued a Squawk 7700 code, signalling a serious in-flight problem, less than an hour into the journey.
Emergency Response and Safe Landing
The Boeing 777-300ER abandoned its transatlantic crossing and executed a controlled turn back towards Heathrow, where emergency teams were positioned as a precaution. Flight tracking data indicates the aircraft began its return shortly after reaching cruising altitude at around 9:15am, before making its descent back towards London. The plane touched down safely on runway 27L at approximately 10:02 BST, with landings on Heathrow's south runway briefly halted shortly afterwards.
Passenger Experience and Aftermath
Passengers on board were escorted back to the terminal after the aircraft taxied to the gate accompanied by emergency vehicles. Despite the alarming turn of events, no injuries have been reported. Air Canada has since moved to rearrange the disrupted service, with a replacement flight scheduled for later that morning. Emergency response teams at Heathrow were kept on standby for the duration of the incident, in line with standard procedures for any aircraft declaring a full emergency.
Air Canada has yet to confirm the nature of the emergency, with such alerts covering a wide range of situations, including technical malfunctions or medical incidents. The incident is now set to undergo a full review, with both the airline and airport authorities expected to release further information in due course.
