Hundreds Of U.S. Flights Canceled As GPS-Based Aircraft Navigation System Fails
peculation that military testing of GPS jamming might be responsible
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June 10, 2019 - by Zak Doffman for forbes.com - ( June 11, 2019: Read updated information lower about the cause)
- Speculation that military testing of GPS jamming might be responsible
"Does anyone know what happened to GPS/ADS-B last night?" one aviation commentator asked Twitter on June 9, a Sunday. "The issue seemed to be quite wide-spread, with a lot of aircraft grounded...
Had this happened on a weekday, it would have been leading headlines on national news—some sort of GPS fault grounded a chunk of the U.S. commercial fleet and hardly anybody noticed."
But at the time of publishing that issue remains unresolved.
According to the FAA, "certain aircraft equipped with the Rockwell Collins GPS 4000-100 and select ADS-B out GPS receivers are indicating 'ADS-B fail, unavailable, TCAS fail or transponder fail' messages." Aircraft without working transponders were directed to coordinate with the FAA before departure, a prior directive had instructed those planes not to fly above 28,000 feet.
Fliegerfaust UPDATE: According to source, during a weekly GPS satellite upload that contained a leap second the Collins GPS 4000 and above couldn't process correctly resulted in those units not operating.