[RndTbl] ADSBExchange reference in the news

Kevin McGregor kevin.a.mcgregor at gmail.com
Wed Oct 19 08:31:27 CDT 2022

Found via Slashdot:
Flights into the Dallas area are being forced to take older, cumbersome
routes and a runway at Dallas-Fort Worth International Airport was
temporarily closed after aviation authorities said GPS signals there aren't
The Federal Aviation Administration said in an emailed statement Tuesday
it's investigating the possible jamming of the global-positioning system
that aircraft increasingly use to guide them on more efficient routes and
to runways. So far, the agency has found "no evidence of intentional
interference," it said. American Airlines, the primary carrier at DFW, said
the GPS issue is not affecting its operations. Southwest Airlines, which
flies from nearby Love Field, said it also isn't experiencing any
disruptions. The FAA reopened the closed runway earlier on Tuesday.

The GPS problem -- despite the lack of impact -- highlights the risk of
widespread reliance on the weak GPS radio signals from space used for
everything from timing stock trades to guiding jetliners. The FAA
occasionally warns pilots in advance of military testing that may degrade
the GPS signals and pilots sometimes report short-lived problems, but the
interference in Dallas is atypical, said Dan Streufert, founder of the
flight-tracking website ADSBexchange.com. "In the US, it's very unusual to
see this without a prior notice," Streufert said in an interview.
ADSBExchange.com monitors aircraft data streams that indicate the accuracy
of the GPS signals they are receiving and the website began seeing problems
around Dallas on Monday, he said. The military has told the FAA it isn't
conducting any operations that would interfere with GPS in that area, said
a person familiar with the situation who wasn't authorized to speak
publicly about it. The primary way FAA's air-traffic system tracks planes
is based on GPS, but older radars and radio-direction beacons have remained
in place as backups.

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