As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: UPON LANDING USING ONLY MANUAL BRAKING IT FELT LIKE THE RIGHT SIDE BRAKES WERE NOT WORKING AS WELL AS THE LEFT SIDE. WITH SAME PEDAL PRESSURE APPLIED AIRCRAFT VEERED TO THE LEFT DURING TAXI IN BRAKE TEMPS WERE 365 295 80 560. MAINTENANCE FOUND TACHOMETER 20GG FAULTED AND REPLACED IT PER AMM 32-42-57. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.