What was found
ON APPROACH AFTER SELECTING FLAPS 30 WE GOT AMBER BRAKE 50% DEGRADE ALONG WITH AMBER AUTO BRAKE FAIL MESSAGE. RAN ABNORMAL CHECKLIST . ON LANDING ROLL OUT THE MESSAGES WENT AWAY . PICTURE INCLUDED OF BRAKE TEMPS ARE HIGHER ON THE LEFT THEN ON THE RIGHT. I BARLEY USED THE BRAKES ON LANDING I USED FULL TR'S. REMOVED AND REPLACED THE BRAKE CONTROL UNIT (BCU), INSTALLED A CUSTOMER SUPPLIED MODIFIED BCU. BCU WAS MODIFIED BY HYDRO-AIRE AEROSPACE CORP, PERFORMED OPERATIONAL CHECKS, NO DISCREPANCIES NOTED AT THIS TIME. WORK PERFORMED IAW 32-43-01.