I'm looking at some of the on-time performance data made public by the US Bureau of Tranport Statistics, e.g. through here. These have the tail numbers of the aircraft used in commercial intra-US flights over the years.
I'm seeing that, occasionally, tail numbers are missing. But in some cases they're actually garbled (e.g.
N105@@) - or just perhaps uncommon. Specifically, I'm seeing, among others, tail numbers such as:
89869E 91469E 9149E A367NW EI-BWD HZO M67153
Can some of these be "legit"? That is, could the above (and similar) strings be actual tail numbers of aircraft which were used in commercial domestic US flights?
Note that we're talking about entries from years between 2001 and 2008.