Comair paid a $3,000 fine in November for a burned out light bulb (the FAA had wanted $44,000).
The light the illuminates the no smoking, fasten seat belt sign was out. An off duty FAA inspector noticed it while flying on the plane. He reported it to a flight attendant who told the pilot. The pilot forgot to write it up in his log, and it wasn’t noticed again for four flights.
The fine was for flying the aircraft when it was “not in an airworthy condition.”