As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS ON LANDING AUTOBRAKE SYSTEM FAILED. MAINTENANCE TROUBLESHOT IAW TSM 32-42-00-810-817-A. PERFORMED FUNCTIONAL TEST OF TACHOMETER 1. NO DEFECT NOTED. CHECKED FAULT MESSAGES AND FOUND TO BE SPURIOUS. ACCOMPLISHED VISUAL INSPECTION OF TACH 1 DRIVE MECHANISM. NO DEFECT NOTED. OK FOR SERVICE.