Is there an estimate of how many tail numbers are blocked (the sum of both ASDI- and FAA-level)? Even a rough approximation would be useful. I saw the total of 1100 from the ProPublica case (propublica.org/article/off-t … iew-040810) mentioned in the earlier threads, but I assume the number of blocked flights is actually much larger.
Also when a number is blocked I assume it is still listed in the publicly available FAA registry file, or is it blocked there as well?
Thanks for any help on this!