What was found
ON APPROACH FO'S FLIGHT DIRECTOR DISAPPEARED AND THE AUTOPILOT DISENGAGED AT VOR/LOC CAPTURE WITH APP ARMED. CYCLED FDS BUT UNABLE TO REESTABLISH FO'S FD. GROUNDED - YES. ACCOMPLISHED DFCS LAND VERIFY TEST REF B737-800 AMM 22-11-00, HGS SYSTEM TEST REF HGS 4000 SMM 34-36-00, OPS CK NML. ALSO, F/O & CAPT FD OPS CK NML W/ IFR 4000 RAMP TESTER. DFCS FAULT REVIEW SHOWS ALT-2 CH-B NO RADIO ALT DATA MSG# 22-11052 & FCC B FAULTS - SLOW TO CARROT KEY RESPONSE. REF LOGPAGE 60200875 APPROACH SURVEY COMPLETED HGS SUCCESSFUL