What was found
F/O REPORTS FLIGHT DIRECTOR NOT DISPLAYING DURING APPROACH ON ILS. FLIGHT DIRECTOR SELECTED ON AND APPROACH MODE ACTIVE. CAPTAIN'S SIDE NORMAL. GROUNDED-YES. PERFORMED DFCS BITE, PER B737-800 FIM 22-11 TASK 801. IN FAULT HISTORY FOUND FAULT CODE 22-11428 FOR CH B. PERFORMED B737-800 FIM 22-11 TASK 809 AND OPERATIONS CHECK GOOD FOR ILS/MMR NR 2. FOUND MULTIPLE APPROACH FAULTS DUE TO RA NR 2 BEING INOPERABLE, REF L/P 60065296 FOR RA NR 2 MEL AND WORK ACCOMPLISHED.