[Jewbacca]

“Navigation signals are very low in power by the time / distance they are received by the aircraft. In cruise flight it’s not as much of a big deal because of the airway width. But on an approach for landing, or reverse approach(departure), interference can cause hundreds of feet in deviation from centerline both vertical axis and horizontal. That does not mean it will in all cases, but it CAN.”

If cell signals had any effect, planes would be dropping like flies as they fly over urban areas.

It’s hokum.

And, yes, I am a pilot.

[blackdog]

So perhaps it's just so that disasters won't be live on the phone? Since 99% of crashes occur on landing and takeoff or transitional phases of flight, that would be the only logical reasoning I could think of?

DME, ADF's,mode C data, and glideslopes are very sensitive to any interference. I suppose it's if you allow this, then how do you prohibit that, kinda thing?

What wattage does a cell phone transmit at? I know 3 watts is the legal limit on aircraft radios both nav/com. Can cell phones step on that with signal to noise ratio? Say at 40,000 feet and 200 miles from the VOR station?

[ArrogantBustard]

What’s the highest altitude (AGL) that you’ve ever successfully made a cellphone connection?