If you heard "5G", "airlines" and "problem" and trying to figure out what is going on. You are not alone. James Fallows wrote a wonderful FAQ style article explaining what's happening between the airlines and the wireless companies who operate 5G.
Short version: 5G versus the airlines is potentially a real issue, rather than a bogus threat. But it’s likely that the parties involved will work out adjustments soon. Which is a good thing.
Head over to the link to understand what exactly happened. I think the regulators have their hands full to read and probably re-write the rules.