Part of the ILS system that helps guide pilots during periods of reduced visibility stopped working early Saturday, forcing controllers to abort 69 flights during a seven-hour period, the Reno Gazette-Journal reported Sunday.
"It's specifically designed for rain and fog, and, as you can imagine, snow, and for this to go down in this kind of weather is absolutely inexcusable," said airport spokesman Brian Kulpin.
It was the second time this month the system -- owned and operated by the Federal Aviation Administration -- has failed.
FAA spokesman Allen Kenitzer in Seattle said distance-measuring equipment failed on the instrument landing system because of the weather. The equipment failure is under investigation, Kenitzer said.