Well, the FAA here just drew this conclusion based on ADS-B data picked up from a satellite, so I'm not sure how you're getting that idea. At least, in areas w

Well, the FAA here just drew this conclusion based on ADS-B data picked up from a satellite, so I'm not sure how you're getting that idea. At least, in areas where such sites have good coverage they may actually get closer to the ground data than the satellites are capable of picking up. I don't mean to dump on doing a quality analysis, just that the quality of data is not as drastically different as you're suggesting.