I am surprised there is not a class action lawsuit against the FCC and 5G Cell phone providers filed by the airlines, AOPA and others for the cost of upgrading aircraft radar altimeters and loss of revenue due to cancelations caused by the inability to use approaches where DH is based on radalt.
The FCC certainly dropped the ball on this in granting the Cell providers the use this frequency spectrum.
The providers are at fault for implementing this knowing the problem existed.
“Well, we gave you time to prepare.” IE “Spend millions to upgrade your systems” doesn’t cut it.