Fort Worth, TX - The two things that stand out most about Spirit Airlines are its low fares and high number of complaints.

Spirit has improved on-time performance and cut its complaint rate by more than half in the last few years, although it still ranks near the bottom among U.S. airlines.

The airline is about to get a new CEO. Ted Christie, currently the president, will take over in January, replacing Robert Fornaro.

Christie sat down with The Associated Press recently at Dallas-Fort Worth International Airport and talked about how Spirit will handle rising fuel costs, the airline’s plan for growth, and how it will improve its reputation. The answers have been edited for length.

Q: For people who have never flown on Spirit, who are your customers?

A: The vast majority of people on airplanes today are in the top 10 percent of wage earners in the United States, so 90-plus percent of the United States just does not travel very often on airplanes. Products like ours have a better shot at trying to attract that type of discretionary spend.

Q: Spirit gets about half its revenue from fares and half from fees. Is that the right mix?

A: We are 50-50 today. The objective is to reach an attractive balance between the fixed component of travel, which is fare, and the variable component of travel, which is ancillary products, that attracts the right guest base. People like options. Not all people buy airline travel the same way.

Q: Do Spirit and the other ultra-low-cost carriers nickel-and-dime customers with all the fees you charge?

A: When people buy a ticket on Spirit or any airline, they have a certain view in their mind about what the value exchange is and what they expect to get in return. They expect a clean, friendly, reliable, safe mode of transportation that met their expectations in the form of the price that they paid. It is different than an experience on a fully bundled carrier, but that product is attractive to certain people because they want to be more selective with their discretionary spending.