On: JAL A359 at Tokyo collided with Coast Guard DH8C o...

[Aeolun]

There’s nothing preventing airplanes from knowing the coordinates of every runway in the world and working out the truth using GPS though.

[lxgr → Aeolun]

This would elevate the impact of GPS spoofing from a minor or major [1] nuisance to a significant terrorism threat.

[1] https://ops.group/blog/new-gps-spoofing-incident-shows-how-i...

[Aeolun → lxgr]

Only if you rely on it for your positioning 100%. Presumably none of the existing measures would change.

[konschubert → Aeolun]

Modern passenger airplanes absolutely do have runway maps.