As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APP, AT 8,000' F/O WAS FLYING WE WERE CLEARED FOR THE ILS 25L APP. CAT3 LOX SO SECOND A/P WAS ENGAGED AFTER LAND WAS SELECTED. AFTER G/S & LOC CAPTURE AUTO PILOTS DISCONNECTED AND ALL FMA'S WENT BLANK AND ILS INFO. ATTEMPTED AGAIN WITH SAME RESULT. THEN ATTEMPTED TO FLY HAND FLOWN CAT 1 APP & AFTER SELECTING LAND & CAPTURE AGAIN ALL FMA'S DISAPPEARED & ILS INFO. DIVERTED. PERFORMED AFS/LAND TEST REF: AMM 22-00-00-05 ALL TEST PASSED. ACFT OK TO CONTINUE.