The Federal Aviation Administration announced Wednesday that it is imposing unprecedented restrictions on Boeing’s jet manufacturing facilities.

It will cap any 737 MAX production rate increases until it’s clear Boeing can ensure its quality control is fully compliant with regulations.

At the same time, the FAA said it has approved the detailed inspection measures it will require of air carriers that fly Boeing 737 MAX 9s before the grounded jets can return to passenger service.That provides Alaska Airlines and United Airlines a path to getting their MAX 9 fleets back in the air. The planes were grounded following a Jan. 5 midair blowout on an Alaska Airlines MAX 9, forcing the airlines to cancel hundreds of flights each day.

Alaska said it expects to bring the first few of its 65 Boeing MAX 9s back into service on Friday, “with more planes added every day as inspections are completed and each aircraft is deemed airworthy.”

United said it will begin the return of its 79 Boeing MAX 9s aircraft to scheduled service on Sunday.

We're beginning to return to our full flight schedule. We are in the process of returning to the reliable operation that you’ve come to expect from Alaska and look forward to welcoming you aboard. Learn more about the 737-9 MAX return to service. Our flexible travel policy is still in place systemwide.