GPS testing slated for Wilmington, N.C.

The FAA is conducting GPS testing, Feb. 3-10, in the Wilmington, N.C., area. This testing may result in “unreliable or unavailable” GPS signal, FAA officials said.

The testing is centered at 334500N/0770000W or the ILM VOR 129.5 degree radial at 56.5NM.

Each testing event lasts 45 minutes, followed by 15 minutes off and may start at any time during the testing periods, FAA officials say.

In its advisory circular, FAA officials say: “During testing, the GPS signal may be unreliable or unavailable within a 287NMR centered at 334500N/0770000W or the ILM VOR 129.5 degree radial at 56.5 NM at FL400 and above, decreasing in area with decrease in altitude to 240NMR at FL250, 177NMR at 10,000 FT MSL, 137NMR at 4,000 FT AGL and 76NMR at 50 FT 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,” FAA officials continue.

The NOTAMs may change with little or no notice, officials add. Pilots are 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.

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