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FAA Flight Advisory: GPS Testing Scheduled

Wednesday, May 02, 2012 @ 12:04 PM

This month the FAA will be testing the GPS system which may result in an unreliable or unavailable GPS signals in the southeastern United States.

The test will be centered at 3020000/08010000 off the coast of Jacksonville, Florida and conducted May 4-15, 2012 from 2000Z–0145Z (0200-0545 EDT).  Each event may last up to 45 minutes with 15 minutes off and may start at any time during the requested periods.

During testing, the GPS signal may be unreliable or unavailable within a 332NMR centered at 3020000/08010000 or the CRG VORTAC 090 degree radial at 69.6 NM at FL400 and above, decreasing in area with decrease in altitude to 283NMR at FL250, 210NMR at 10,000' MSL, 170NMR at 4,000' AGL and 127NMR at 50' AGL.

Pilots are strongly encouraged to report anomalies during testing to the appropriate ARTCC to assist in the determination of the extent of GPS degradation during tests.  The time periods may be reduced or cancelled with little or no notice, so pilots are strongly advised to check NOTAMs frequently for possible changes prior to operations in the area.  NOTAMs will be published at least 24 hours in advance of any GPS tests.