An old problem, but you have to wonder how the installers and inspectors overlooked this. 10 aircraft means they didn’t know what they were doing:
“Investigators found a chafed wire in the captain’s control column caused by contact with an untucked safety wire pigtail. Republic inspected its other EMB-170/175s and found nine other aircraft with similar chafing.”
avweb.com: Wire Chafing Checks Recommended After EMB 175 Crew Briefly Loses Pitch Control