If you think the high-priced GPS navigator in your airplane is bulletproof, think again. Spoofing by altering the WAAS GPS position is a growing problem that we should all be ready for at any time. Sister publication IFR Magazine recently explained some real-world issues to look for.
This is a companion discussion topic for the original entry at https://www.avweb.com/features/gps-jamming-spoofing