What was found
AT GLIDESLOPE CAPTURE AUTOPILOT B ON LOST GLIDESLOPE INDICATION ON BOTH PFD. LOCALIZER MOVED FULL RIGHT AND CAME BACK TO CENTER BACKWARDS. GROUNDED - YES. WHILE ON L NAVAPP FMC SHOWS FAULT MSG 22-11822 DURING DFCS FAULT REVIEW FOR B A/P. REF FIM 22-11 TASK 801 - NO CURRENT FAULTS. ACCOMPLISHED FIM 22-11 TASK 811 FOR FMC DATA INVALID - RE-RAN DFCS BITE REF FIM 22-11 TSK 801- NO FAULTS NOTED. PRECAUTIONARY ACCOMPLISHED DFCS LAND VERIFY REF AMM 22-11-00-700-801 -ALL TESTS PASS. ETOPS GROUND VERIFICATION COMPLETE. NOTE : NO FAULTS ON FMC 1& 2 BITE OR CDS BITE.