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GPS Interference Testing
815 2 2017-11-3
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PS013
Captain
Flight distance : 3035282 ft
United States
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Did you know that, from time to time, GPS testing is performed and can result in interferences ?

These tests are planned ahead, and you can check the FAA web site for notices.

Go to https://pilotweb.nas.faa.gov/PilotWeb/
expand the "ARTCC Notices, TFRs and Special Notice Page"
Select your area and click on  "View GPS Notam"
( make sure you ask for the ICAO format ... it is easier to read )


https://pilotweb.nas.faa.gov/Pil ... amp;formatType=ICAO

Other reference : https://notams.aim.faa.gov/nsuserguide102015.pdf

Another source would be https://www.navcen.uscg.gov/pdf/ ... PS_Interference.pdf


2017-11-3
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djiuser_RojfSW97etD9
First Officer
Flight distance : 24259 ft
Australia
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I realise its an older thread, but can the OP explain further. What do you mean by interferences ?...
2018-5-11
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PS013
Captain
Flight distance : 3035282 ft
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djiuser_RojfSW97etD9 Posted at 2018-5-11 23:26
I realise its an older thread, but can the OP explain further. What do you mean by interferences ?...

Well, basically the military are doing some tests, including GPS jamming, causing GPS to report the wrong position or no position at all ... It can be strong enough to force ground stop at airport, as well as forcing pilot to not use GPS based approaches.

The FAA, is warning of the possible disturbances via NOTAMS, but the NOTAMs do not describe the exact inaccuracies' ,,, I guess the militaries do not want to share the exact testing they are doing ,,,,
2018-5-12
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