I don't know if such things are used on passenger aircraft, but I've heard that fighter jets use time domain reflectometry to detect potential faults in wires, and how far along the wire the fault lies. Even a small nick in the insulation is supposed to change the impedance enough to create a detectable reflection.
At least some gigabit ethernet interfaces have built in weaker TDR that measures the length of each twisted pair, but I've only ever had one computer that showed that info in the BIOS/UEFI.
So, maybe if TDR is used for inspection, we can rest assured.
At least some gigabit ethernet interfaces have built in weaker TDR that measures the length of each twisted pair, but I've only ever had one computer that showed that info in the BIOS/UEFI.
So, maybe if TDR is used for inspection, we can rest assured.