Normal T-6 blade is a -12 = 9'1", The USAF also ran a -20 = 8" off each blade,
but that blade is not standard, some Reno races ran it just at Reno.




The North American Trainer Association is a (501)[c]3 association dedicated to
the restoration, preservation and safe flying of all North American Aviation
built trainer aircraft (AT-6, SNJ, Harvard, NA-64, T-28, TF-51, TB-25). Dues
are $45.00 per year US