STEVE INSKEEP, host:
NPR's business news starts with another airline in Chapter 11.
This time it's Frontier Airlines filing for bankruptcy protection. It's the fourth U.S. carrier to do so in less than a month. Aloha, Skybus and ATA have already shut down.
Frontier says it will keep operating and paying workers. The discount airline has been hit by high fuel costs and the slowing economy, and there's another factor at work. Frontier says its main credit card processor unexpectedly said it would start withholding much of the proceeds from the airline's ticket sales.