Hi

I know nutin about FAA specs regarding lettering on planes.....but....

I do remember an article not too long ago where a REALLY expensive paint job on
a REALLY expensive plane had to be redone for one simple reason....

In the interest of increased legibility, the owner(s?) instructed the painter
to put a small horizontal dash across the vertical part of the number 7.....or
something along those lines....kinda like putting putting a slash across an O
to help distinquish a zero from the letter o....

So, unless you wanna letter something twice...I'd REALLY check out those
lettering specs with the FAA font nazis....

take care

Bll