Air Canada flight AC 810, from Toronto to Ataturk International Airport in Istanbul, Turkey, made an unscheduled landing at London Heathrow Airport, at 5:38 a.m. local time on August 23.
According to the Air Canada spokesperson Isabelle Arthur, the plane was diverted as a precaution after the crew reported an ‘oil indication’. However, she did not provide details.
Emergency services were put on alert as the plane safely touched the runway at London Heathrow. All passengers and crew members remained unhurt.
The passengers were booked on other flights while the plane was temporarily grounded for inspection.

Iran Air flight IR-721 had to return and make an emergency landing at Tehran Imam Khomeini International Airport, Robat Karim, Iran, on May 27th.
Air Peace flight 4P-7191 had to return and make an emergency landing at Port Harcourt International Airport, Port Harcourt, Rivers, Nigeria, on March 12.
EgyptAir flight 802 made an emergency landing in Cairo, Egypt, on August 29th.