Can you provide dates, places, or any additional information pertaining to these examples. I could look up the specifics of these cases. I suspect there may be "additional information" that could help explain "why".
I don't have the specifics. One was at a lake near Wasilla several years back. One was at Lake Union in Washington. A different incident involved two FAA Inspectors on an Alaska lake on the Peninsula, though that wasn't a "congested area" question. I don't have dates.
There is no "additional information" that could help explain "why". They were cited specifically because they flew closer than 1000 feet to a "congested area". They did so while landing, which they thought was their legitimate excuse for flying close to people on the surface. But, READ the regulation: "Except when NECESSARY for landing or takeoff". Can't get much clearer than that. In these cases, the FAA argued (accurately, by the way) that the pilots COULD have landed in a different part of the lake or in a different direction, thereby eliminating the "need" to fly close to persons or property on the surface. These cases were very straightforward, and the pilots found no sympathy with Administrative Court or the Board. Their response was "Read the regulation".
If you fly over or close to a "congested area", and bear in mind that the FAA has determined that a small group of Boy Scouts standing on a lake shore constituted a "congested area", EVEN while landing or taking off, there had better not be any other way to do so without flying close to a congested area.
This is most likely in the "off airport" world. Consider the example of an airport. There can be a hundred people standing next to the approach end of a runway, but you can still land there, because there is really no other alternative, assuming you're going to land at that airport. But, take your seaplane to a lake.....a party is going on at the dock you want to park on. So, you fly over or near that dock, swing around and land right next to the dock. **** hot, and it's captured by a dozen cell phones. If the wrong person gets hold of that video, you're about to have a bad month.
MTV