Air Canada Boeing 737 Max ferry flight redirects after engine release

An Air Canada Boeing 737 MAX 8 is being towed while another Air Canada Boeing 737 MAX 8 is seen on the ground at Toronto Pearson International Airport in Toronto, Ontario, Canada, on March 13, 2019.

Chris Helgren | Reuters

The Boeing 737 Max ferry, which was flying to Montreal, diverted earlier this week in Arizona due to engine problems, the airline said.

Pilots on Air Canada flight 2358 received an engine warning shortly after taking off from Marana, Arizona on Tuesday, the airline said. The carrier kept 737 Max planes there after the planes landed around the world in March 2019 after two deadly crashes.

“As part of the usual operating procedures in such situations, I decided to shut down one engine,” and switched to Tucson, Air Canada said. The flight carried three crew members and there were no passengers. The plane remains in Tucson.

Boeing declined to comment and asked the airline questions.

The Belgian aviation website said that the plane had a “hydraulic indication of low pressure”. Air Canada did not immediately respond to a further request for comment.

U.S. authorities lifted the ban on the aircraft last month after Boeing made changes to the software involved in both crashes, and addressed other concerns. Canadian officials last week approved design changes to the plane.