Two killed, 18 injured in small plane crash in California

A failed circuit board in networking equipment at a computer center in Salt Lake City prevented air traffic control computers in different parts of the country from talking to each other and led to widespread cancellations and delays for the second time in 15 months.

21 regional radar centers countrywide were affected. The delays were exacerbated by weather in the Northeast. For an example, AirTran canceled at least 22 flights, JetBlue Airways had delays of an hour on 25 flights. Delta and American Airlines and other carriers were also affected.