Sure, say you busted some Airspace and the FAA called and asked you to stop by for a friendly chat. They're going to ask you to bring your Logbook(s).Has this ever had any no-kidding (adverse) impact on someone and, if so, how? What I mean is, say there’s an “event” that prompts the FAA to dig into the background of a pilot (maybe like they busted mins so bad on a procedure that ATC felt compelled to give them a phone number - I don’t know). How would currency come up in the review? How would the FAA know if an approach was only logged when meeting the requirements? (Maybe by the threat of perjury?). And more importantly, has “inaccurately” logging an approach ever actually resulted in more than a disagreement with a CFII during a discussion?
Same with if you really did something bad with ATC or you just happened to bust minimums at an airport the FAA happened to drive out to that day to do Ramp Checks. Is it a frequent thing, I doubt it. You don't hear much about it, but then if the FAA ever called me in, I don't know that I'd be posting it all over the place. So that may be why we don't hear much about it.
But one thing I've read from multiple people, if you are contacted by the FAA, don't start off adversarial. Usually they just want info. My only real experience with the FAA was when I lost a cylinder over the water south of JFK and landed at JFK. I got a call from a guy in the JFK FSDO who was a little miffed since I stopped all the traffic at JFK why he didn't already have X, Y and Z forms!!!!!!!!! Took him a minute to hear what I was saying that I wasn't an air carrier.