What was found
PDIS 153 22-10 2040 08MAY20 LAX FACT U LOGPAGES:3179707 DURING ILS 25L AT KLAX THE FLIGHT DIRECTOR ERRONEOUSLY DIRECTED A PATH WELL BELOW THE GLIDESLOPE. FMA'S SHOWED LOC AND GS. WE EXECUTED A GO-AROUND. ON SUBSEQUENT APPROACH SYSTEM OPERATED NORMALLY. FACT 08MAY20 17:48 LAX U MCDP SHOWS A/P CTN ILS BEAM ERR. NO OTHER FAULTS OR MESSAGES . PERFORMED ILS OPERATIONAL TEST PER MM 34-31-00-5-99. OPS CHECK NORMAL. A/C OK FOR SERVICE.