Fuel Tank Filler Areas. Fuel tank filler
caps will be painted the same as the color
scheme of the aircraft. A 1 inch wide ring (an-
nulus) with a 6.0 inch inside diameter (or as in-
dicated in Chapter 9 or 10) will be painted around
Disconnect electrical wiring before
the filler cap, black for tactical aircraft, red for all
other paint schemes.
Internal Station and Compartment Mark-
jacent to the walkways will be marked NO STEP in
ings. When applicable, internal station and
compartment markings will be retained. Aircraft
-10 or the -20 manuals will be used to deter-
NATO SYMBOL MARKINGS
mine station location. Station markings will ap-
A I R C R A F T SERVICING POINTS.
The U.S. Army has ratified a NATO Stan-
OXYGEN OUTLETS. Mark all ox-
dardization Agreement (STANAG) NO. 3109., ABC
ygen outlets -- WARNING, NO SMOKING WHILE
AIR STD 51/2, and STANAG 3230 which promul-
OXYGEN IN USE.
gates standard aircraft markings. The standard
markings will facilitate cross-servicing of NATO
I F T P O I N T S . All lift points will
aircraft, thereby insuring more effective cross-
indicated by an arrow pointing to the lift point.
service operations. NATO symbols will be
The word LIFT will be marked above the lift point
retained only on aircraft assigned to NATO areas.
in letters 1/2 inch high. Notations, such as NO
The servicing and precautionary markings
LIFT or NO PUSH, should be applied on areas of
aircraft which would be subject to damage by
of Army aircraft will be in accordance with the
symbols shown and described herein.
Symbols will be approximately 4 inches in
7-31 . S
T R U T N U M B E R S . A l l w i n g s t r u t s
the longest dimension, except where otherwise
will be numbered with the part number. The
specified. However, smaller sized symbols may
number will be located at the lower end, with the
be used if required by the item or area to be mark-
top of the letters and numerals forward.
ELECTRICAL CONNECTIONS. A
will be in the scale of 1 to 4 in relation to the sym-
warning will be painted at the points where it is
necessary to break electrical connections when
removing wings, tail booms, or other assemblies
Access doors or panels to the servicing
containing hidden wiring. The letters will be of
points will be marked with appropriate servicing
sufficient height to provide a permanent, distinct,
symbol or symbols.
and legible marking.