Inspect Control Cables
100265-00
Use these instructions to inspect flight control cables for corrosion, broken strands, and kinks.
Applicable Aircraft Serial Numbers
All
Type of Maintenance
Line
Level of Certification
LSA-RM
Task Specific Training Required
No
Special Tools Required
None
Parts Required
None
Aircraft System and Number
06—Flight Controls
Safety Equipment
As Needed
Consumables
LPS-3 Rust/Corrosion Inhibitor
Visually Inspect Cables for corrosion, kinks, and broken strands.
Task Instructions
1. Inspect cables for broken strands. Any cable assembly that has at least one broken wire strand located in a critical fatigue area must be replaced. Figure 82 The following are critical fatigue areas:
◦ The working length of the cable where it runs over, under, or around a pulley, sleeve, or through a fair-lead.
◦ Any section where the cable is flexed, rubbed, or worked in any manner.
◦ Any point within one foot of a swaged-on fitting.
2. Inspect cables for corrosion. If the surface of the cable is corroded, do the following:
a. Relieve tension and carefully force the cable open by reverse twisting to visually inspect the interior. Use a magnifying glass if needed.
b. If no internal corrosion is present, clean the outer surface with a clean, coarse-weave rag or fiber brush. After cleaning, apply LPS-3 Rust Inhibitor to the affected area.
Note:
Do NOT use metallic wool or solvents to clean the surface.
c. If internal corrosion is present, replace the cable.
3. Inspect cable for kinks. Kinked cables have strands out of position, which lead to unequal tension and excessive wear at that part of the cable. Rather than straightening out kinked cables, replace regardless of wear or broken wires.
4. Inspect cables for general wear. Fold each wing and visually inspect both the inboard rod end of the inboard pushrod on the wing and the lower roll control cable terminal at the bottom of the roll socket at the wing fold joint.
a. If there is evidence of wear on the rod end or the roll control cable as shown in Figure 82 carefully inspect the end of the roll control cable for any broken strands.
b. If there is no evidence of wear or corrosion on the rod end or roll cable—no further action is needed.
Figure 82. Broken strand and black residue indicating wear on lower roll control cable.
Figure 83. Example of cable surface corrosion.
Verification Method
Ensure cables inspected fall within the acceptable conditions listed above. Otherwise follow the procedure listed for each type of unacceptable condition.
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