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Commercial Flights Are Experiencing 'Unthinkable' GPS Attacks and Nobody Knows What to Do (www.vice.com)

submitted 11 months ago by [email protected] to c/[email protected]

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Commercial Flights Are Experiencing 'Unthinkable' GPS Attacks and Nobody Knows What to Do::New "spoofing" attacks resulting in total navigation failure have been occurring above the Middle East for months, which is "highly significant" for airline safety.

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[–] [email protected] 5 points 11 months ago

If it's a smaller plane (such as a CRJ / ERJ) with only one IRU, it will not be able to determine if GPS is valid or not, so the drift correction gets spoiled.

Large commercial aircraft are using 3 IRUs, with newer aircraft using ADIRUs. If GPS does not agree with the three IRUs, the GPS data is thrown out. If the GPS is within tolerance, correction is applied. You could build up very small errors over a long distance, but you should still be pretty close to the airfield when you get there.