CHEYENNE, Wyo. (AP) — The Federal Aviation Administration is seeking a $304,000 fine against Great Lakes Airlines for alleged improper use of de-icing fluid.

The FAA says 19 flights out of Hays, Kan., in January 2011, were out of compliance with federal regulations. The problem had to do with the temperature of the de-icing fluid. The fluid was too hot — more than 180 degrees.

The Great Lakes de-icing manual states that de-icing fluid heated to more than 180 degrees can damage aircraft. The fluid is sprayed onto planes to remove ice prior to takeoff.

A spokeswoman for Cheyenne-based Great Lakes did not immediately return a message Wednesday seeking comment.

The Casper Star-Tribune reports ( ) Great Lakes averages 12 flights daily from Cheyenne to Sheridan, Denver, Billings, Phoenix, Los Angeles and elsewhere.