In this file photo taken on September 30, 2020 a Boeing 737 MAX airliner piloted by Federal Aviation Administration (FAA) Administrator Steve Dickson taxis for a two-hour evaluation flight at Boeing Field in Seattle, Washington

Canadian airline Westjet on Friday cancelled a flight just prior to take-off after a warning light went off in the cockpit of the Boeing 737 MAX aircraft.

The 737 MAX had only been allowed by Canada to fly in its airspace days earlier, after Boeing addressed and improved on the MAX in the aftermath of two that had led to it being grounded worldwide for almost two years.

WestJet Flight 658 from Calgary to Toronto left the gate with passengers on board, but was forced to turn around, a company spokeswoman told AFP in an email.

“After a normal engine start, a standard function of the health monitoring system