The FAA issued a flight advisory warning pilots of scheduled GPS interference testing in the Anchorage, Alaska, area from Nov. 6-16, 2026.
During the testing windows, GPS signals may become unreliable or completely unavailable, according to Alaska Airmen’s Association officials. The interference may also disrupt GPS-dependent systems, including Wide Area Augmentation System (WAAS), Ground-Based Augmentation System (GBAS), and Automatic Dependent Surveillance-Broadcast (ADS-B) equipment.
The testing is centered on the Ted Stevens Anchorage International Airport (PANC) VOR (TED) 025° radial at 12 nautical miles. The potential advisory area encompasses a large portion of south central Alaska, extending outward based on altitude:
- 266 nautical mile radius from Flight Level 400 to Unlimited
- 219 nautical mile radius at Flight Level 250
- 153 nautical mile radius at 10,000 feet MSL
- 138 nautical mile radius at 4,000 feet AGL
- 128 nautical mile radius at 50 feet AGL
Testing is scheduled to take place during the following daily windows (UTC):
- Nov. 6-8, 2026: 1800Z to 2100Z
- Nov. 6-15, 2026: 2300Z to 2359Z
- Nov. 7-8, 2026: 0001Z to 0200Z
- Nov. 10-16, 2026: 0001Z to 0500Z
- Nov. 10-16, 2026: 0700Z to 1300Z
Pilots operating in south central Alaska are advised to review active NOTAMs prior to each flight, maintain preparedness for intermittent or total loss of GPS service, and rely on non-satellite navigation alternatives when necessary. Aviators should exercise added caution during instrument procedures and report any anomalies to air traffic control.
For more information: AlaskaAirmen.org
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