What was found
LEAVING FL 180 ON DESCENT NR 3 ENG RPM LOW INDICATION. N1 20 PERCENT,N2 50 PERCENT, EGT 400. NO OBVIOUS DAMAGE TO ENGINE. ATTEMPTED RE-START AND ENGINE RE-STARTED BUT INDICATIONS ONLY WENT BACK TO N1 20 PERCENT, EGT 400, AND N2 50 PERCENT. ENG HUNG THERE WITH NO FURTHER INCREASE IN RPM. SHUTDOWN ENGINE AND LANDED. REMOVED AND REPLACED THE MAIN ENG CONTROL AND THE FUEL PUMP.