Originally Posted by
zeus2120
I like the NxxxUA system because it's always made it easy for me to track / log tail numbers of the flights I take.
Yep, exactly. And the problem with the other way is that they don’t even go sequentially. The first A321 is N44501. The next is N14502. Not N44502, 44503, etc
Doing N4501, N4502, etc even with no U or letter would be easier too.