What was found
DURING PREFLIGHT EMERGENCY POWER TEST FAILED. IRU 1 ON BAT ILLUMINATED. REMOVED AND REPLACED EPCU REF MM 24-08-01. R-T-S PASS REF MM 24-08-01. EMERGENCY POWER TEST PASSED SEVERAL TIMES WITH NO FAULTS NOTED. TESTED ALL IRU€™S REF MM 34-43-00-700-803, NO FAULTS NOTED. FOUND FLUCTUATING BATTERY CHARGING, REMOVED AND REPLACED MAIN BATTERY CHARGER REF MM 24-34-03. TESTS NORMAL.<BR>TESTED RCCB B1-138, NO VOLTAGE DROP NOTED. OK TO CONTINUE.