As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM, FIM 34120801 OFF FLAG IN VIEW ON CAPT'S ALTIMETER SELECTING ALTN AIR DATA SW CLEARS THE FAULT. LATER ON IN DESCENT OFF FLAG RTND FFM FL 380 TO 3500'. REPLACED CAPT'S ALTIMETER IND, OPS CK OK PER AMM 34-13-01. OK FOR SVC.