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UPDATE: FAA Schedules 4 New Periods of April 2017 GPS Interference Testing

Pilot adjusting GPS on instrument panel of Cessna 421 - FAA Schedules 2017 GPS Interference Testing advisories

4-27-17 – The GPS Interference Testing may lead to unreliable or unavailable GPS signals in the designated area during the testing.

The FAA has posted four new flight advisories for GPS Interference Testing during dates in April and May. The first is for the Salt Lake City, UT area, between April 26 – May 12, 2017, the second and third are for the Barstow, CA area from April 26 – May 8, 2017, and the fourth is for the Fort Carson, CO area on April 28, 2017. The testing will be happening during the time periods and around the area specified below. During the time that the testing is taking place, the FAA has said pilots may receive either an unreliable GPS signal or no GPS signal at all. And as with their past advisories, the FAA says that pilots should report anomalies “only when ATC assistance is required.

Salt Lake City, UT Area – April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 401401N1132754W or the BVL VORTAC 144 degree radial at 32NM.

What times and dates will the testing take place?

  • April 26th – 28th, 2017 – 1600Z – 1730Z and 1830Z – 2000Z
  • April 30th – May 4th, 2017 – 1600Z – 1730Z and 1830Z – 2000Z
  • May 5th, 2017 – 1600Z – 1730Z
  • May 7th, 2017 – 1600Z – 1730Z
  • May 8th – 11th, 2017 – 1600Z – 1730Z and 1830Z – 2000Z
  • May 12th, 2017 – 1600Z – 1730Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (UTTR GPS 17-01) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI A 398NM RADIUS CENTERED AT 401401N1132754W (BVL 144032) FL400-UNL,
    • 348NM RADIUS AT FL250
    • 260NM RADIUS AT 10000FT
    • 263NM RADIUS AT 4000FT AGL
    • 182NM RADIUS AT 50FT AGL

Barstow, CA Area – 1st April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 352006N1163300W or the HEC VOR 341 degree radial at 33NM.

What times and dates will the testing take place?

  • April 26th, 2017 – 2130Z – 2359Z
  • April 28th, 2017 – 1730Z – 1830Z and 2230Z – 2359Z
  • April 29th, 2017 – 0001Z – 0030Z and 2230Z – 2359Z
  • April 30th, 2017 – 0001Z – 1330Z and 2230Z – 2359Z
  • May 1st – 2nd, 2017 – 0001Z – 0300Z and 2230Z – 2359Z
  • May 4th – 6th, 2017 – 0001Z – 0030Z and 2230Z – 2359Z
  • May 7th, 2017 – 0001Z – 0300Z and 2230Z – 2359Z
  • May 8th, 2017 – 0001Z – 0300Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (NTC GPS 17-14L) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI A 49NM RADIUS CENTERED AT 352006N1163300W (HEC 341033) FL400-UNL,
    • 49NM RADIUS AT FL250
    • 45NM RADIUS AT 10000FT
    • 42NM RADIUS AT 4000FT AGL
    • 50NM RADIUS AT 50FT AGL

Barstow, CA Area – 2nd April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 352006N1163300W or the HEC VOR 341 degree radial at 33NM.

What times and dates will the testing take place?

  • April 28th, 2017 – 2000Z – 2230Z
  • April 29th, 2017 – 1830Z – 2230Z
  • April 30th, 2017 – 2000Z – 2230Z
  • May 1st – 2nd, 2017 – 0300Z – 1330Z and 2200Z – 2230Z
  • May 4th – 6th, 2017 – 0430Z – 1330Z and 2200Z – 2230Z
  • May 7th, 2017 – 0300Z – 1330Z and 2200Z – 2230Z
  • May 8th, 2017 – 0300Z – 1330Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (NTC GPS 17-14H) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI A 311NM RADIUS CENTERED AT 352006N1163300W (HEC 341033) FL400-UNL,
    • 257NM RADIUS AT FL250
    • 190NM RADIUS AT 10000FT
    • 140NM RADIUS AT 4000FT AGL
    • 124NM RADIUS AT 50FT AGL

Fort Carson, CO Area – April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 383546N1045136W or the BRK VOR 199 degree radial at 23NM.

What times and dates will the testing take place?

  • April 28th, 2017 – 1900Z – 2000Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (FCAR GPS 17-29) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI A 44NM RADIUS CENTERED AT 383546N1045136W (BRK 199023) FL400-UNL,
    • 44NM RADIUS AT FL250
    • 38NM RADIUS AT 10000FT
    • 40NM RADIUS AT 4000FT AGL
    • 48NM RADIUS AT 50FT AGL

Final Details

For pilots who are planning to fly in the above area during the testing period, the FAA advises checking the NOTAMs frequently, as they can change with little or no notice. To read the FAA flight advisories for the latest April 2017 GPS Interferences Testing with area map graphics:


UPDATE 4-21-17: FAA Schedules Oceanside, CA GPS Interference Testing

The FAA has posted a flight advisory for Oceanside, CA area GPS Interference Testing during dates between April 25 – April 27, 2017. The testing will be happening during the time periods and around the area specified below. During the time that the testing is taking place, the FAA has said pilots may receive either an unreliable GPS signal or no GPS signal at all. And as with their past advisories, the FAA says that pilots should report anomalies “only when ATC assistance is required.

Oceanside, CA Area – April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 331743N1172806W or the OCN VORTAC 311 degree radial at 4NM.

What times and dates will the testing take place?

  • April 25th, 2017 – 1630Z – 2229Z
  • April 26th, 2017 – 1730Z – 1830Z and 2000Z – 2129Z
  • April 27th, 2017 – 1730Z – 1830Z and 2000Z – 2229Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (SPAWAR GPS 17-01) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI A 395NM RADIUS CENTERED AT 331743N1172806W (OCN 311004) FL400-UNL:
    • 344NM RADIUS AT FL250
    • 278NM RADIUS AT 10000FT
    • 227NM RADIUS AT 4000FT AGL
    • 168NM RADIUS AT 50FT AGL.

Final Details

For pilots who are planning to fly in the above area during the testing period, the FAA advises checking the NOTAMs frequently, as they can change with little or no notice. To read the FAA advisory for the Oceanside, CA April 2017 GPS interference testing, with an area map graphic, click here.


UPDATE 4-20-17: FAA Schedules Pinon Canyon, CO GPS Interference Testing

The FAA has posted a flight advisory for Pinyon Canyon, CO area GPS Interference Testing during dates between April 22 – April 28, 2017. The testing will be happening during the time periods and around the area specified below. During the time that the testing is taking place, the FAA has said pilots may receive either an unreliable GPS signal or no GPS signal at all. And as with their past advisories, the FAA says that pilots should report anomalies “only when ATC assistance is required.

Pinon Canyon, CO Area – April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 373013N1035915W or the PUB VOR 148 degree radial at 52NM.

What times and dates will the testing take place?

  • April 22nd, 2017 – 1900Z – 2130Z
  • April 27th, 2017 – 1900Z – 2130Z
  • April 28th, 2017 – 2000Z – 2130Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (PCMS GPS 17-23) GPS (INCLUDING WAAS, GBAS, AND ADSB) MAY NOT BE AVBL WI A 366NM RADIUS CENTERED AT 373013N1035915W (PUB148052) FL400-UNL:
    • 309NM RADIUS AT FL250
    • 223NM RADIUS AT 10000FT
    • 213NM RADIUS AT 4000FT AGL
    • 182NM RADIUS AT 50FT AGL

Final Details

For pilots who are planning to fly in the above area during the testing period, the FAA advises checking the NOTAMs frequently, as they can change with little or no notice. To read the FAA advisory for the Pinon Canyon, CO April 2017 GPS interference testing, with an area map graphic, click here.


UPDATE 4-18-17: FAA Schedules More Las Vegas, NC GPS Interferences Testing

After a recently concluded round of GPS Interference Testing around the Las Vegas, NV area, the FAA has posted another flight advisory for Las Vegas area testing during dates between April 21 – April 28, 2017. The testing will be happening during the time periods and around the area specified below. During the time that the testing is taking place, the FAA has said pilots may receive either an unreliable GPS signal or no GPS signal at all. And as with their past advisories, the FAA says that pilots should report anomalies “only when ATC assistance is required.

Las Vegas, NV Area – 2nd April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 371934N1154249W or the BTY VOR 045 degree radial at 59NM.

What times and dates will the testing take place?

  • April 21st, 2017 – 0500Z – 1300Z
  • April 25th, 2017 – 0500Z – 1300Z
  • April 28th, 2017 – 0500Z – 1300Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (NTTR GPS 17-06) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI A 406NM RADIUS CENTERED AT 371934N1154249W (BTY 045059) FL400-UNL:
    • 341NM RADIUS AT FL250
    • 252NM RADIUS AT 10000FT
    • 255NM RADIUS AT 4000FT AGL
    • 206NM RADIUS AT 50FT AGL

Final Details

For pilots who are planning to fly in the above area during the testing period, the FAA advises checking the NOTAMs frequently, as they can change with little or no notice. To read the FAA advisory for the 2nd round of Las Vegas, NV April 2017 GPS interference testing, with an area map graphic, click here.


UPDATE 4-14-17: FAA Schedules More Las Vegas, NV GPS Interference Testing

The FAA has posted a flight advisory for additional GPS Interference Testing around the Las Vegas, NV area during a period from April 16 – April 17, 2017. The testing will be happening during the time periods and around the area specified below. During the time that the testing is taking place, the FAA has said pilots may receive either an unreliable GPS signal or no GPS signal at all. And as with their past advisories, the FAA says that pilots should report anomalies “only when ATC assistance is required.

Las Vegas, NV Area – April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 371957N1160221W or the BTY VOR 033 degree radial at 47NM.

What times and dates will the testing take place?

  • April 16th, 2017 – 1830Z – 2230Z
  • April 17th, 2017 – 1830Z – 2359Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (NTTR GPS 17-04) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI A 535NM RADIUS CENTERED AT 371957N1160221W (BTY 033047) FL400-UNL:
    • 488NM RADIUS AT FL250
    • 450NM RADIUS AT 10000FT
    • 403NM RADIUS AT 4000FT AGL
    • 378NM RADIUS AT 50FT AGL

Final Details

For pilots who are planning to fly in the above area during the testing period, the FAA advises checking the NOTAMs frequently, as they can change with little or no notice. To read the FAA advisory for the Las Vegas, NV April 2017 GPS interference testing, with an area map graphic, click here.


UPDATE 4-7-17: FAA Schedules More Alamogordo, NM GPS Interference Testing

The FAA has posted a flight advisory for additional GPS Interference Testing around the Alamogordo, NM area during a period from April 10 – April 24, 2017. The testing will be happening during the time periods and around the area specified below. During the time that the testing is taking place, the FAA has said pilots may receive either an unreliable GPS signal or no GPS signal at all. And as with their past advisories, the FAA says that pilots should report anomalies “only when ATC assistance is required.

Alamogordo, NM Area – April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 332811N1063917W or the TCS VORTAC 062 degree radial at 33NM.

What times and dates will the testing take place?

  • April 10th – 15th, 2017 – 1830Z – 2230Z
  • April 18th – 21st, 2017 – 1830Z – 2230Z
  • April 23rd – 24th, 2017 – 1830Z – 2230Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (WSMR GPS 17-05) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI AN AREA DEFINED AS 380458N1081623W, 361180N1013327W, 274604N1014446W, 274259N1120005W, 335018N1122508W, TO POINT OF ORIGIN FL250-UNL; 226NM RADIUS CENTERED AT 332811N1063917W (TCS 062033) 10000FT; 226NM RADIUS AT 4000FT AGL; 164NM RADIUS AT 50FT AGL.

Final Details

For pilots who are planning to fly in the above area during the testing period, the FAA advises checking the NOTAMs frequently, as they can change with little or no notice. To read the FAA advisory for the Alamogordo, NM April 2017 GPS interference testing, with an area map graphic, click here.


UPDATE 4-3-17: FAA Schedules More Bremerton, WA Area GPS Interference Testing

The FAA has posted a flight advisory for extensive GPS Interference Testing around the Bremerton, WA area starting on April 6, 2017, and running through May 6, 2017. The testing will be happening during the time periods and around the area specified below. During the time that the testing is taking place, the FAA has said pilots may receive either an unreliable GPS signal or no GPS signal at all. And as with their past advisories, the FAA says that pilots should report anomalies “only when ATC assistance is required.

Bremerton, WA Area – April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 474356N1224354W or the SEA VOR 300 degree radial at 25NM.

What times and dates will the testing take place?

  • April 6th, 2017 – 1300Z – 1559Z and 1900Z – 2259Z
  • April 7th, 2017 – 0100Z – 0229Z and 0500Z – 0759Z and 1300Z – 1559Z and 1900Z – 2259Z
  • April 8th, 2017 – 0100Z – 0229Z and 0500Z – 0759Z
  • April 10th, 2017 – 1300Z – 1559Z and 1900Z – 2259Z
  • April 11th – 14th, 2017 – 0100Z – 0229Z and 0500Z – 0759Z and 1300Z – 1559Z and 1900Z – 2259Z
  • April 15th, 2017 – 0100Z – 0229Z and 0500Z – 0759Z
  • April 17th, 2017 – 1300Z – 1559Z and 1900Z – 2259Z
  • April 18th – 21st, 2017 – 0100Z – 0229Z and 0500Z – 0759Z and 1300Z – 1559Z and 1900Z – 2259Z
  • April 22nd, 2017 – 0100Z – 0229Z and 0500Z – 0759Z
  • April 24th, 2017 – 1300Z – 1559Z and 1900Z – 2259Z
  • April 25th – 28th, 2017 – 0100Z – 0229Z and 0500Z – 0759Z and 1300Z – 1559Z and 1900Z – 2259Z
  • April 29th, 2017 – 0100Z – 0229Z and 0500Z – 0759Z
  • May 1st, 2017 – 1300Z – 1559Z and 1900Z – 2259Z
  • May 2nd – 5th, 2017 – 0100Z – 0229Z and 0500Z – 0759Z and 1300Z – 1559Z and 1900Z – 2259Z
  • May 6th, 2017 – 0100Z – 0229Z and 0500Z – 0759Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (FFC GPS 17-01) GPS (INCLUDING WAAS, GBAS, AND ADSB) MAY NOT BE AVBL WI A 240NM RADIUS CENTERED AT 474356N1224354W (SEA 300025) FL400-UNL:
    • 192NM RADIUS AT FL250
    • 121NM RADIUS AT 10000FT
    • 107NM RADIUS AT 4000FT AGL
    • 95NM RADIUS AT 50FT AGL

Final Details

For pilots who are planning to fly in the above area during the testing period, the FAA advises checking the NOTAMs frequently, as they can change with little or no notice. To read the FAA advisory for the Bremerton, WA April 2017 GPS interference testing, with an area map graphic, click here.


UPDATE 4-3-17: FAA Schedules Olympia, WA GPS Interference Testing

The FAA has posted a flight advisory for GPS Interference Testing around the Olympia, WA area on April 5, 2017. The testing will be happening during the time periods and around the area specified below. During the time that the testing is taking place, the FAA has said pilots may receive either an unreliable GPS signal or no GPS signal at all. And as with their past advisories, the FAA says that pilots should report anomalies “only when ATC assistance is required.

Olympia, WA Area – April 2017 GPS Interference Testing Advisory

Where’s the testing area?

The location is centered at 465848N1224022W or the OLM VORTAC 071 degree radial at 9NM.

What times and dates will the testing take place?

  • April 5th, 2017 – 2000Z – 2359Z

As they have in the past, the FAA is saying that the testing may last the entire outlined period of time.

NOTAM Information

  • NOTAM INFO: NAV (JBLM GPS 17-08) GPS (INCLUDING WAAS, GBAS, AND ADS-B) MAY NOT BE AVBL WI A 19NM RADIUS CENTERED AT 465848N1224022W (OLM 071009) FL400-UNL:
    • 20NM RADIUS AT FL250
    • 20NM RADIUS AT 10000FT
    • 20NM RADIUS AT 4000FT AGL
    • 33NM RADIUS AT 50FT AGL

Final Details

For pilots who are planning to fly in the above area during the testing period, the FAA advises checking the NOTAMs frequently, as they can change with little or no notice. To read the FAA advisory for the Olympia, WA April 2017 GPS interference testing, with an area map graphic, click here.

Anders Clark was introduced to aviation a few short years ago, and has developed an interest in aviation history and what the future of aviation will bring. A writer and editor, Anders enjoys researching and sharing the stories of aviation.