As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE AIRSPEED AURAL WARNING CIRCUIT BREAKER WAS FOUND TO BE (POPPED). WHEN THE UPPER PANEL WAS LOWERED EVIDENCE OF ARCING WAS FOUND ON AIRFRAME STRUCTURE. THE WIRE WAS REPAIRED THROUGH PARTIAL REPLACEMENT, CHAFE PROTECTOR WAS ADDED TO THE AIRFRAME STRUCTURE AND THE WIRE BUNDLE AND THE WIRE BUNDLE WAS RE-POSITIONED. (TC NR 20070418005)