The Federal Aviation Administration said it wants to fine Southwest Airlines $325,000 for improperly installing a switch on a Boeing 717.
The agency said in August 2011, maintenance workers did not properly install the switch that enables flight crews to test the windshield heating system on the Boeing 717. The center and left windshield warning systems were reversed although the right windshield warning system operated properly, the FAA said.
The aircraft, which is operated by Southwest's subsidiary AirTran Airways, flew 1,140 passenger flights before the problem was corrected. Southwest can appeal the civil penalty.