Sounds similar to the U.S.' old NC designation. We dropped the C, which I think designated a 'civil' aircraft and now use only the N plus numbers.
Don
Not to be confused with the "Navy-Curtis" flying boats, NC-1, 3, and 4, which attempted a trans-atlantic crossing in 1919!
But the two
are linked!
The international conference that first came up with registration numbers for aircraft was ratified in October, 1919. While other countries used 'obvious' initial characters (C=Canada, D=Deutschland/Germany, SE=Sweden, G=Great Britain), the United States used "N" in honor of the Navy boats that had so recently crossed the Atlantic.
