As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENG OIL FILTER CLOG LIGHT ILLUMINATED. ENG POWER REDUCED TO IDLE. EMERGENCY DECLARED FLIGHT LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. FOUND CARBON BUILD UP IN OIL FILTER. REPLACED RT ENG OIL FILTER & CHANGED OIL. SYS GND CHECKED NORMAL OPERATION CLOSED.