DENVER-
Great Lakes Aviation owes the city $482,244 in various fees and interest on those fees for using Denver International Airport, from 2000 to 2004, the city auditor’s office said.
The city of Denver owns and operates the airport.
The charges included $276,585 in underpaid landing fees, apparently due to Great Lakes Aviation using the wrong aircraft weights to calculate the fees after it switched aircraft models, according to a report by the auditor’s office that was made available Sunday.
Under an airport use and lease agreement, interest on payments due to the city accrues at 18 percent annually, the report said.
In an e-mail, Auditor Dennis Gallagher’s spokesman Denis Berckefeldt said it was not clear whether the carrier would be able to pay up.
A representative of Great Lakes Aviation, based in Cheyenne, Wyo., did not return a phone message left after business hours Sunday night. The audit said the company did not respond to its findings.
The payment due part of the $10.5 million owed for 2004, with the airline already having paid more than $10 million of that amount, the audit showed.



