What was found
ON ILS, AUTOPILOT CMD, ON GS, FMA G/S FLAGGED AT 2400 MSG WITH AUTOPILOT DISCRETE LIGHT AND EICAS MSG. DISCONNECTED A/P AND FMA G/S FLAG NOTICED.//MCDP LAST FLT FAULT SHOWS A/P CTN ILS BEAM ERR . PERFORMED TEST 30,40 OPS CHECK OK IAW FIM 22-03-00. CENTER MMR TEST NORMAL IAW AMM 34-31-00.