As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB FROM MGUM NR 4 ENGINE SHORT CIRCUIT LIGHT ILLUMINATED, FIRE WARNING WOULD NOT TEST. THE CREW SHUTDOWN NUMBER FOUR ENGINE PER COM PROCEDURES. WIND MILLING OIL PRESSURE WAS 3PSI. THE CREW LANDED IN KNGU WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED FORWARD OUTBOARD FIRE LOOP. OPERATIONAL CHECK GOOD IAW DC8 MAINTENANCE MANUAL 26-10-1. AIRCRAFT WAS RETURNED TO SERVICE.