Tail numbers not starting with N, with domestic US carriers? 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 &quot;legit&quot;? 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.
Yes, these can be legit.  For example, EI- means the aircraft is registered in Ireland.  Others look corrupt, though.  HZ-AAA is Saudi Arabia, but your HZ example looks too short.  The examples starting with four numbers don't match any country's pattern.
https://en.wikipedia.org/wiki/List_of_aircraft_registration_prefixes
The examples here that start with a string of digits all resolve to actual aircraft, if you prepend an N to them.  (Commenter Ralph J suggested this.)
Corrupt data wouldn't be too surprising.  For 2005, for example, 15000 of the 594000 entries had no tail number at all.