As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE F/E STARTED TO SMELL SMOKE AND SAW SPARKS COMING FROM THE NR 2 ENGINE OIL QTY GAUGE, MANUALLY PULLED C.B. INDICATOR STOPPED SPARKING.AIRCRAFT RETURNED TO MAINTENANCE BASE. MAINTENANCE PERSONNEL ACCOMPLISHED A DETAILED VISUAL INSPECTION OF ALL F/E PANEL WIRING WITH NO FAULTS FOUND, OIL QTY WIRING TESTED WITH NO FAULTS FOUND AND OIL QTY C/B TESTED WITH NO FAULTS FOUND.OIL QTY INDICATOR FOUND TO SMELL OF ELECTRICAL BURNING, INDICATOR REPLACED AND AIRCRAFT RETURNED TO SERVICE.