What was found
AFT ZONE TEMP EICAS MESSAGE. TRANSFERRED TO MDDR 141343, IAW MEL 21-61-01-02, CAT C. PERFORMED BITE TEST, IAW FIM 21-60-60 FAULT TREE 806 FOUND TRIM VALVE TO BE AT FAULT. ALSO OPC AFT TRIM VALVE MODULE, IAW AMM 21-61-07 CONFIRMED VALVE INOPERABLE. WHILE PERFORMING GVI FOUND AFT TRIM VLV, CONNECTOR NOT SECURED. SECURED CONNECTOR, OPERATIONS CHECK GOOD, IAW B767 21-64-01. THIS CLEARS DMI 141343.