As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, EXPERIENCED SLIGHT YAWING MOTION. DURING CLIMB AND CRUISE NOTICED SYSTEM A DROPPED TO 76%, DIVERTED BACK TO DEPARTURE AND LANDED NORMALLY. BOTH HYDRAULIC QUANTITIES WERE BACK TO NORMAL LEVELS. THE AIRCRAFT WAS GROUNDED. PERFORMED BITE CHECK OF SMYD COMPUTER IAW FIM 27-32-00-810-801. NO CURRENT FAULTS. REPLACED A SYSTEM HYDRAULIC QUALITY TRANSMITTER IAW AMM 29-33-12 AND ATBT.