What was found
DURING CRUISE FLT M/T CHIP CAUTION ILLUMINATED. 30 SECONDS LATER BATT DISCONNECT CAUTION ILLUMINATED. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE ARRIVED, REMOVED / INSPECTED / CLEANED M/T CHIP PLUG, FOUND CATEGORY "C" CHIP. SAVED CHIP AND OIL ANALYSIS. INSTALLED NEW FILTER, DRAINED OIL AND SERVICED WITH 11 LITERS NEW TRANZMAX Z OIL. PERFORMED SUCCESSFUL GROUND AN 10 MIN MAINTENANCE CHECK FLIGHT. PERFORMED SELF TEST OF BATT MASTER ELECTRICAL BOX AND BOTH #1 & #2 MASTER ELECTRICAL BOXES. ALL 3 BOXES PASSED SELF TEST WITH RESPECTIVE 3 GREEN LED'S. COULD NOT DUPLICATE THIS DISCREPANCY @ THIS TIME. A/C APPROVED FOR R.T.S.