As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRECAUTIONARY SHUT DOWN FOR FLUCTUATING TORQUE AND WP. UPON INSPECTION, DETERMINED THE RIGHT FUEL SEDIMENT BOWL (FIREWALL FILTER) CONTAINED A SUFFICIENT AMOUNT OF ICE CRYSTALS TO RESTRICT FUEL FLOW. DISASSEMBLED, CLEANED, AND REINSTALLED FILTER ELEMENTS/ASSEMBLY. PERFORMED A COMPLETE MAINTENANCE 'POWER ASSURANCE CHECK' AND FOUND THE AIRCRAFT AND POWERPLANTS ACCEPTABLE FOR CONTINUED OPERATION.