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Old Aug 24, 2015, 07:16 AM
cbk07 is online now
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Joined Sep 2004
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On the left side of the wing (the 2 digit number followed by a smaller letter):

10.2. Racing numbers and area
10.2.1. Racing numbers and area letters
may be obtained from the NMPRA Secretary.
The use of these identifiers is highly
recommended, but not required. The numbers are
located on the upper left and lower right hand
wing panel facing toward the left side, so that the
number will be right-side-up when the model is
in a left bank. The height of the numbers shall be
at least three (3) inches. Area letters should
immediately follow the racing numbers and
should be at least 1/2 inch high.
10.2.2. The assigned area letters are as
A-Northern California.
B-Central California, Hawaii.
C-Southern California.
D-Nevada, Utah, Arizona.
E-Oregon, Washington, Idaho, Alaska.
G-Montana, Wyoming, South Dakota,
North Dakota, Nebraska, Kansas.
H, I-New Mexico, Oklahoma, Texas,
Arkansas, Louisiana.
J-Maine, New Hampshire, Vermont,
Massachusetts, Connecticut, Rhode
K, L, M-New York, New Jersey.
P-Ohio, Pennsylvania, West Virginia.
Q, R-Maryland, Virginia, North
Carolina, Delaware, Washington D.C.
S, T-Tennessee, Mississippi, Alabama,
Georgia, Florida, South Carolina.
U, V-Missouri, Illinois, Indiana,
W-Minnesota, Wisconsin, Michigan,
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Old Aug 24, 2015, 06:30 PM
thumper_008 is offline
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Thank you for such a great explanation!
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Old Aug 24, 2015, 06:45 PM
speedfreak1 is offline
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United States, FL, Mulberry
Joined Jan 2012
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Thank you Craig! Great explanation! It's really interesting to see where some of my old racers have originated.
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Old Aug 25, 2015, 11:30 AM
DHG is online now
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United States, CO, Arvada
Joined Jul 2010
769 Posts
Just FYI, everybody: Pretty much all the numbers are optional now, at least in terms of planning your paint scheme. The NMPRA numbers were always optional; the AMA numbers are still required but there's no longer a minimum size or placement specified in the rules. So if you wanted to, you could do your whole scheme without any numbers at all, and for an AMA-sanctioned contest just hand-write your AMA number on the lane sticker.

I still like the looks of the AMA & NMPRA numbers, so I paint them on. But aside from having an AMA number somewhere on the airplane, it's totally a matter of personal choice.

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