What was found
AFT CABIN TEMP ADVISORY MESSAGE. (<P>T/S PER FIM 21-60-806 AND FOUND TEMP CONTROL FAULT LIGHT FOR AFT ON. TRANSFERRED TO MDDR #121719 IAW MEL 21-61-01-02, CAT 'C', DUE DATE: 17-DEC-2019. </P><P>LP 1075672 - M3: PERFORMED FIM 21-61 FT 804, AFT ZONE TRIM AIR VALVE FAULTED. REMOVED AND REPLACED AFT ZONE TRIM AIR VALVE (V3) IAW AMM 21-61-07, OPS CHECK NORMAL. NO EICAS MSG PRESENT. THIS ACTION CLEARS DMI 121719, PLACARDS REMOVED AND MCC NOTIFIED.</P>)