Airlines pulled dozens of Boeing 737 Max jets out of service for inspections after the airplane maker informed them concerning a potential electrical problem, the most recent difficulty for plane.

Boeing said Friday that the issue influenced planes utilized by 16 airlines, and that it suggested inspections before the planes fly once more.

The Max was grounded worldwide in March 2019 after two crashes slaughtered 346 individuals. Controllers in the US, Europe, Canada and Brazil cleared the plane to continue flying lately subsequent to Boeing changed a computerized flight-control framework that assumed a part in the crashes.

Boeing said Friday that the electrical issue was disconnected to the flight-control framework. It didn’t say the number of planes are influenced or what amount of time it will require for inspections and, if vital, repairs.

Southwest Airlines, which started flying the Max again a month ago, said it eliminated 30 of its 58 Max jets from its timetable to assess them. Southwest representative Brian Parrish said the aircraft has not encountered any realized problems identified with the electrical issue.

Southwest has an armada of in excess of 700 Boeing 737s, the greater part of them more established models than the Max. Ward said the carrier will utilize different planes to work flights that had been planned with Max fly, and it expects just insignificant interruption to its activity.

American Airlines briefly eliminated 17 of its 41 Max planes from service, as per a memo to workers. Boeing followed the issue to a creation change made after the overall armada of Max jets was grounded in 2019, American’s chief operating officer, David Seymour, said in the memo.

“We won’t ever purposely work an airplane with a known or potential issue,” Seymour said.

American was the main U.S. carrier to continue flying the Max, in late December.

United Airlines said it incidentally grounded 16 of its 30 Max planes and will attempt to work all trips with its different planes. The aircraft said it was in contact with Boeing and federal controllers to figure out what steps are required before the planes can get back to service.

Gold country Airlines said it eliminated each of the four of its Max jets from service “to consider inspections and for work to be finished.”

Boeing said that it is working intimately with the Federal Aviation Administration on the matter.