Failure to Tow Aircraft. In the event Airline fails to expeditiously remove any aircraft which City has notified Airline to tow under the previous paragraph, as determined by City, then such failure will be an Event of Default hereunder, which shall be curable by Airline towing such said aircraft and thereafter paying City one thousand ($1,000) dollars for each thirty (30) minute period or portion thereof that Airline fails to tow. The parties hereby agree that this amount is liquidated damages and not a penalty, is payable within ten (10) business days following receipt of an invoice hereunder and shall be included as a Non-Airline Revenue in the Airfield Area Cost Center.
