As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 HELIPILOT FAILED IN FLIGHT, THE COPILOT ATTITUDE INDICATOR FAILED AND THE CIRCUIT BREAKER POPPED. SMELLED BURNING WIRE. MAINTENANCE FOUND WIRING TO COPILOT TARSYN UNIT CHAFED IN THE AVIONICS COMPARTMENT WHERE THE TARSYN UNIT MOUNTS. REPLACED TARSYN UNIT AND REPAIRED WIRING.