What was found
AMBER TAI INDICATION ABOVE #2 N1 GAUGE. GROUNDED - YES. CREW STATED THEY DID NOT OPERATE EITHER ENG COWL ANTI-ICE VALVES DURING THIS PARTICULAR FLIGHT. SUSPECT OVERPRESSURE COND DURING ENG OPERATION. PERFORMED OPS CHECK ON #2 ENG COWL ANTI-ICE VALVE VIA APU BLEED, VALVE OPERATED NORMALLY. AS A PRECAUTION REPLACED #2 ENG COWL ANTI ICE VALVE. B STEVENSON 55549 REF AMM 30-21-11. PERFORMED #2 ENG IDLE RUN REF AMM 71-00-00. NO ABNORMAL INDICATIONS NOTED. JH 43824 08/29/2023. #2 ENG COWL ANTI-ICE VALVE OPS CHECKS GOOD.ETOPS GROUND VERIFICATION SUCCESSFUL SEAMC JEREMY NOTIFIED.