Three Canadian-operated Boeing 737 MAX aircraft were pulled from service on Friday as part of a precautionary grounding related to electrical issues that affected dozens of aircraft operated by 16 airlines. Three Canadian airlines operate the MAX, Air Canada, WestJet and Sunwing, and aircraft belonging to two of them are involved. Transport Canada confirmed the three aircraft were pulled from service but didn’t name the two airlines involved. “The three aircraft have been removed from service until they are examined, and any required corrective action is completed. We are also following up with the U.S. FAA on the same issue,” TC said in a statement.
The electrical fault concerns insulation on wiring on electrical grounds. It is unrelated to the flight control software issues that grounded the type from 2019 until early this year. The electrical problem will take anywhere from a few hours to a few days to investigate in each aircraft.