United Airlines flight from Sacramento to Chicago is declaring an emergency.
The flight is operated by a Boeing 737 MAX 9 (registration N37521).
UPDATE #1
The flight UA2207 is diverting to Denver.
UPDATE #2
The Boeing 737 MAX 9 is expected to land at 10:15 am at Denver.
UPDATE #3
Flight UA2207 has landed on runway 35L at DEN Airport.
UPDATE #4
United is scheduling to resume the flight at 10:50 AM.
UPDATE #5
United is scheduling to resume the flight at 12:40 PM as the ground team needs to check the plane following a technical issue.