As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN USING AUTOPILOT 1FMGC DROPS OUT OF MNGDSPEED AND NAV. REVERTS TO SLCTD SPD AND HDNG :TBLSHT & SUSPECT FAC NR 1. SWAPPED FACS NR 1 & 2 PER MM. NR 2 FAC INOP. A-C IS RMV'D FROM CAT II & CAT III, REF CF982. REPLACED FAC 2 PER MM. SYSTEM TESTS OK. PERFORMED SATISFACTORY CAT III TEST PER MM. AC RETURNED TO CAT III SERVICE.