A split wire is one where the conductor can be seen through the crack. The team consensus is that existing maintenance programs adequately address hoses. Control Cables are visually inspected and a rag is run along the cable to detect broken external strands. Internal cable problems are detected through observation of stretching or necking of the cable. Rigging problems also occur as the cable stretches and tension is decreased.
Cables also have hard time replacement intervals.
The Military may be developing an eddy current test tool and methodology to verify that cable internals are intact.