As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: ON CAT-3 APPROACH GOT AN APPROACH WARNING IN HUD AND ON HAP PANEL, UNABLE TO SELECT A HEADING ON FMA GOT A PWS FAIL ON BOTH NAV DISPLAY AFTER LEVEL OFF, CONFIGURATION HORN SOUND WITH NO LIGHTS TO INDICATE A CONFIGURATION ISSUE. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT OKC. FOUND FCC " A" FAULT 22-11301. REMOVE AND REPLACED FCC-A AND GROUND TEST GOOD. PER AMM 22-11-33-400-801.