As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, THE NR 1 ENGINE CONSTANT SPEED DRIVE OIL PRESSURE LIGHT ILLUMINATED. SHUT DOWN NR 1 ENGINE DUE TO AN UNSUCCESSFUL ATTEMPT TO DISCONNECT THE CONSTANT SPEED DRIVE. AIRCRAFT DIVERTED TO MNL AND LANDED WITHOUT INCIDENT. REPLACED THE NR 1 ENGINE CONSTANT SPEED DRIVE, OPERATIONAL CHECK GOOD.