( CNN ) -- The Federal Aviation Administration on Thursday proposed fining AirTran Airways for allegedly operating an airplane not in compliance with regulations , the agency said . The FAA wants to fine AirTran Airways of Orlando , Florida , $ 250,000 for allegedly operating a Boeing 737 on four passenger flights without testing the sensor that indicates potential loss of lift on the aircraft . The angle-of-attack sensor was damaged by lightning during a March 20 , 2009 flight , said the statement . AirTran is also accused of misusing the Minimum Equipment List when it decided to continue flights without addressing the needed repair , the statement said . The MEL is a list of what systems must be working to fly a plane legally and what can be deferred for later repairs . Repairing a damaged AOA sensor can not be deferred , said the statement . AirTran has 30 days to respond or challenge the agency 's enforcement letter .
FAA proposes fine for AirTran 's alleged disregard for regulations . The airline has been fined $120,000 by the Federal Aviation Administration after it failed to follow a series of safety rules during an emergency landing in San Francisco last month. AirTran has 30 days to settle or challenge the claim .