As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED A RT ENGINE GEARBOX PRESSURE LIGHT ABOUT 25 MINUTES INTO THE FLIGHT. REDUCED POWER ON THE RT ENGINE AND LIGHT WENT OUT. THE ACFT RETURNED WITHOUT INCIDENT. DECLARE AN EMERGENCY. MAINTENANCE TROUBLESHOT PROBLEM TO A RUPTURED BLOWER OIL FILTER LINE. MAINTENANCE R & R THE BLOWER OIL FILTER LINE WITH A SERVICEABLE LINE AND OPS CHECKED GOOD. RETURNED THE ACFT TO SERVICE.