FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 11. Aircraft Electrical Systems | 16. Wire Marking | 11-210. Hot Stamp Marking
AC 43.13-1B CHG 1
the color should contrast with the wire insula- tion or sleeve.
9/27/01
3”
H215A20
15”
H215A20
(b) Single wire without sleeve
15”
3”
H215A20
FIGURE 11-23. Spacing of printed identification marks (direct marking).
a. Extreme care must, therefore, be taken
during circuit identification by a hot stamp
machine on insulation wall 10 mils or thinner.
b. Alternative identification methods
such as “Laser Printing”, “Ink Jet”, and “Dot
Matrix” are preferred. When such modern
equipment is not available, the use of stamped
identification sleeving should be considered on
insulation wall thickness of 10 mils or less.
FIGURE 11-24. Spacing of printed identification marks
(indirect marking).
11-210. HOT STAMP MARKING. Due to
widespread use of hot stamp wire marking,
personnel should refer to SAE ARP5369,
Guidelines for Wire Identification Marking
using the Hot Stamp Process, for guidance on
minimizing insulation damage. Hot stamp
process uses a heated typeface to transfer pig
ment from a ribbon or foil to the surface of
wires or cables. The traditional method im
prints hot ink marks onto the wire. Exercise
caution when using this method, as it has been
shown to damage insulation when incorrectly
applied. Typeset characters, similar to that
used in printing presses but shaped to the
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Par 11-209