As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN'S COMPASS AND ALTIMETER INTERMITTENTLY FAILED. ATC NR 1 AND NR 2 FAILED. REPLACED NR 1 CENTRAL AIR DATA COMPUTER (CADC) IN ACCORDANCE WITH AMM 34-12-01, OPS NORMAL IN ACCORDANCE WITH AMM 34-13-04. ACCOMPLISHED ATC TEST IN ACCORDANCE WITH AMM 34-53-00. OPERATIONALLY CHECKED COMPASS SYSTEM AND COULD NOT DUPLICATE MALFUNCTION.