Updated

Mismanagement and underinvestment by the U.S. Air Force could possibly lead to the failure and blackout of the Global Positioning System (GPS), a federal watchdog agency says.

The risk of failure starts in 2010, according to the Government Accountability Office (GAO) report quoted by PC World.

The failure would impact not only military operations, but also the millions of people and businesses who rely on the satellite-based navigation systems built into cars, boats and cell phones.

"If the Air Force does not meet its schedule goals for development of GPS IIIA satellites, there will be an increased likelihood that in 2010, as old satellites begin to fail, the overall GPS constellation will fall below the number of satellites required to provide the level of GPS service that the U.S. government commits to," the GAO report states.

The report says the Air Force has struggled to build successful GPS satellites within cost and on schedule.

• Click here to read more on this story from PC World.

• Click here to read the full Government Accountability Office report.

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