FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 7. Aircraft Hardware, Control Cables, and Turnbuckles | 8. Inspection and Repair of Control Cables and Turnbuckles | 7-150. Corrosion and Rust Prevention
AC 43.13-1B
9/8/98
FIGURE 7-20. Pulley wear patterns.
n. Inspect fair-leads for wear, breakage,
alignment, cleanliness, and security. Examine
cable routing at fair-leads to ensure that defec
tion angles are no greater than 3°€maximum.
Determine that all guides and anti-abrasion
strips are secure and in good condition.
o. Examine pressure seals for wear and/or
material deterioration. Seal guards should be
positioned to prevent jamming of a pulley in
case pressure seal fails and pieces slide along
the cable.
7-150. CORROSION AND RUST PRE-
VENTION. To ensure a satisfactory service
life for aircraft control cables, use a cable lu
bricant to reduce internal friction and prevent
corrosion.
a. If the cable is made from tinned steel,
coat the cable with rust-preventive oil, and
wipe off any excess. It should be noted that
corrosion-resistant steel cable does not require
this treatment for rust prevention.
b. Lubrication and corrosion preventive
treatment of carbon steel cables may be ef
fected simultaneously by application of com
pound MIL-C-16173, grade 4, or
MIL-C-11796, Class I. MIL-C-16173 com
pound should be brushed, sprayed, or wiped on
the cable to the extent it penetrates into the
strands and adequately covers the cable sur
faces. It will dry “tack free” in 24 hours at
77 °F. MIL-C-11796 compound is applied by
dipping the cable for 1/2 minute into a tank of
compound heated to 77 ° ± 5 °C (170 ° ± 9 °F)
for 1/2 minute then removing it and wiping off
the excess oil. (An example of cable corro
sion, attributable to battery acid, is shown in
figure 7-21.)
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