wrote in message
ups.com...

When I was learning to fly in '73 the change in registrations came about.
They had run out of CF numbers, having run through CF-AAA to CF-ZZZ,
with some left out for obvious reasons, so they went to the C- format,
starting with C-GXXX, and as older airplanes were repainted they were
converted from CF-ABC to C-FABC.


They had run out of numbers?