Originally Posted by
Fursty Ferret
GPIRS is vulnerable, though, and given that something as new and shiny as a 787 can be confused by the GPS spoofing and decide that it’s 80 miles off track, a 737 is likely to be affected in a similar way.
No, you cannot affect the IRS position in a 737 with spoofed GPS signals once it is initialised correctly. The question wasn't about the 787.