An Air Canada flight from Vancouver to Japan was forced to make an emergency landing hours into its voyage Tuesday night.

The airline said the pilot noticed a problem about five-and-a-half hours after takeoff and landed the Boeing 787 Dreamliner safely at Ted Stevens International Airport in Alaska around 10:40 p.m.

“The pilot got an indicator that the oil pressure had started dropping,” spokesman Peter Fitzpatrick told CTV News in an email. “Safety concerns prompted them to turn around. No one was injured.”

A second plane was sent to take the 120 passengers the rest of the way to Narita International Airport, and the flight was due to arrive around 6 a.m.

Air Canada first introduced Dreamliners into its fleet in May 2014, ordering 37 of the passenger jets.

The company touted the aircrafts’ vaulted ceilings, bigger windows, LED lighting, and cabins designed to handle more oxygen.