Tech The FAA says 5G could interfere with planes: Is its concern actually warranted? November 12, 2021November 15, 2021Bob O'DonnellComments Off on The FAA says 5G could interfere with planes: Is its concern actually warranted? The FAA says the new 5G frequencies interfere with altimeters, which tell pilots how close a plane is to the ground when it's coming in for a landing.