FAA Warns of GPS Outages This Month During Mysterious Tests on the West Coast

[NotHardly]

6. Effects more than flight issues ...

You may find it interesting to go to
http://webcache.googleusercontent.com/search?q=cache:J_DPx_eUclMJ:www.nerc.com/docs/escc/PNT%2520-%2520Power%2520Systems%2520V19.pdf+&cd=1&hl=en&ct=clnk&gl=us

It is a cashed link to a white paper regarding Preliminary Special Reliability Assessment Whitepaper: Extended loss of GPS Impact on Reliability

PDF]Extended loss of GPS Impact on Reliability - NERC
www.nerc.com/.../PNT%...
North American Electric Reliability Corporation
Preliminary Special Reliability Assessment Whitepaper: Extended loss of GPS Impact on Reliability. Findings: The U.S. Global Positioning Satellite (GPS) system ...

such outage effects transportation tracking, cell phones, shipping, agriculture, etc. particularly if they do not know about it. As I understand it here, the mention is only being provided for airlines and piloting use. The extent and impact of the outage is not just the southwest, if one looks to the broadcast, it extends to Kansas City, Mo.