A US Airways passenger plane bound from New York's LaGuardia Airport to Charlotte, N.C., crashed into the frigid waters of the Hudson River shortly after takeoff Thursday afternoon, but all passengers appeared to survive.

Flight delays continued Thursday as American Airlines moved to cancel another 900 flights and expectations grew that cancellations are likely to spread to other U.S. carriers as regulators tighten their safety audits of airlines.

The Federal Aviation Administration has unveiled a new air traffic control system, ADS-B, that incorporates the Global Positioning System to more accurately track airplanes in flight. Tom Bearden examines ADS-B, which the FAA has promised will make air travel safer…

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