Total posts : 45366
If for AM, I would respond that the 200 foot statement is only a “guideline” for a typical transmitter system and not a rule and that my station is not typical in that it has been optimized for legal operation under the rules (15.219). Advances in ground planes, antennas, and efficiency produce greater range than given in the guidelines and are legal.
For FM it is much more difficult because we are limited by the field strength at a distance and almost all of us are not able to measure this. If you are using a certified transmitter according to the manufacturer’s instructions that is your defense. If not, then the 200 foot suggestion, if this is your range, implies you are legal though this doesn’t prove it.
I tend to over think (and worry) about such things and my wife tells me “Why don’t you wait until it is a problem?” That being said, I do try to minimize the chance of a problem but don’t obsess over it (not saying that you are).