FAA hits United with $1.1 million proposed fine stemming from allegations that the airline shirked a required fire safety check for years

• The FAA proposed a $1.1 million fine against United Airlines on Monday.
• The regulator alleged that United missed a required safety check for nearly three years.
• The airline said in a statement that the safety of its flights was "never in question."

The Federal Aviation Administration hit United Airlines with a proposed fine of more than $1.1 million on allegations that the company failed to conduct certain mandatory safety checks on its Boeing 777 aircraft for nearly three years.