What was found
DURING CLIMB-OUT STBY ATT IND 5 MORE NOSE UP THAN CAT/FO ADI'S SHORTLY THERE AFTER STBY ATT IND RAPID PRECESSION TO -25 WITH INAPPRECIATE BANK INDICATIONS. FOR TROUBLESHOOTING RECAGED TWICE RESET BREAKER. PROBLEM REOCCURRED. REPLACED STANDBY ARTIFICIAL HORIZON PER 727 AMM 34-25 -011-4. CHECKS NORMAL. R/I FROM FACT PREMATURE REMOVAL/INSTALLATION OFF MFG H321AKM1, POS ONL SRL 8236, TAG 78861B ON MFG H321AKM1, SRL 7030 TAG 126A10.