What was found
LEFT PACK BITE ON MX PAGE. LEFT PACK SURGING, T/S BITE INDICATES TEMP CONTROL VALVE & TRANSFERRED TO MDDR 137549, PER DDG 21-51-01-01, CAT C. PERFORMED BITE TEST OF LT CONTROLLER, PER FIM TASK 21-51 FT 844, "TEMP CONT VALVE" FAULT LIGHT ON PANEL. REMOVED AND REPLACED LT TEMP CONT VALVE, IAW B767 AMM 21-51-12. OPERATIONS CHECK GOOD. THIS ACTION CLEARS DMI NR 137549. RE-ACTIVATED FLOW CONTROL VALVE. MXC NOTIFIED, PLACARD REMOVED DISP: DP 1622Z.