What was found
TWICE ON ILS, LOC AND G/S CAPTURED, ACFT NOSED OR PITCHED DOWN EXCESSIVELY. VISUAL CHECK END OF RUNWAY G/S TRANSMITTER WAS NOT BLOCKED, AUTOPILOT. ACFT GROUNDED. C REW VERBAL INFO -A/P DID NOT DISCONNECT ON EITHER TIME. CREW DISCONNECTED A/P. NO FLT FAULTS LOGGED EITHER FCC A OR FCC B. PERFORMED ILS, SYSTEM TEST W/IFR-4000 AND PERFORMED LAND VERIFY BITE NR 49. FCC A PASS, FCC B DID NOT PASS DUE TO SPOIL 4 POSITION, SENSOR 2 FAULT. PERFORMED FIM 22-12, TASK 801. SPARE FCC USED FOR TROUBLESHOOTING. NO HELP REINSTALLED ORIGINAL FCC B. ADJUSTED NR 4 SPOILER SENSOR. LAND VERIFY TEST NOW PASS. INSTALLATION TEST FOR FCC GOOD REF AMM 22-11-33. DFCS A PASS LAND VERIFY TEST ILS SYS GOOD REF 34-31-00. NO HISTORY LAST 90 DAYS. ACFT WILL SHOW CAT IIIA HGS ONLY -STATUS SCREW SAME.