Small planes are identified by their tail numbers which in the US are “N” numbers. IMHO, there are good and bad N numbers with the good N numbers being easy to say and the bad N numbers being tongue twisters. I fly two planes N13151 and N2081S (Cessna two zero eight one Sierra) or (Skyhawk two zero eight one Sierra). I have trouble with this N number and stumble over it all the time. Talking to others, they have trouble with certain N numbers as well. This included some air traffic controllers during a recent visit to a control tower – they told me the N numbers that give them trouble.
Good and Bad N Numbers