As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED SLUGGISH GYRO OPERATION, FOUND LOW GYRO PRESSURE (3 PSI) ON BOTH ENGINES SELECTED OR SINGLE ENGINE OPERATION. UNABLE TO INCREASE PRESSURE. REMOVED VALVES (P/N 2H22-11) AND BENCH TESTED RESPECTIVE SOLENOIDS. SOLENOIDS FOUND TO BE PARTIALLY CLOSED AND NOT ENERGIZING ON POWER AS WELL AS LOSING PRESSURE ON LOW PRESSURE SIDE. BOTH VALVES REPLACED.