As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GYRO HORIZON WAS RETURNED FROM REPAIR STATION WITH 8130-3 TAG INDICATING ''REPAIRED''. AFTER INSTALLATION AND FUNCTIONAL TEST, THE UNIT WAS DETERMINED TO HAVE SAME SYMPTOMS AS ORIGINAL. THE UNIT SHOWED NO EVIDENCE THAT IT WAS EVER REPAIRED. NO ''DO NOT BREAK SEAL'' STICKER, ETC. (X)