What was found
EMERGENCY DECLARED - NR 3 ENG BECAME UNRESPONSIVE DURING APPROACH, PHASE OF FLIGHT. ENG CONTINUED TO RUN BUT THROTTLE MOVEMENT DIDN'T CONTROL ENGINE NO CURRENT FAULT ON CFDS. VISUAL CHECK NR 3 ENG NO ABNORMAL FOUND. T/S P IAW FIM 76-11-01-03, FIG 103 SUSPECT NR 3 ENG ECU INTERMITTENT. R R NR 3 ENG ECU IAW AMM 73-21-02-4, R-T-S TEST OK.