As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 YAW DAMPER WILL NOT ENGAGE. ITEM TRANSFERRED TO DMI CONTROL NR 4107 IAW ENA MEL 22-21-01 CAT A PLACARDS INSTALLED. R&R NR 1 YAW DAMP CPU, OPS CK GOOD IAW A300 AMM 22-21-00. PLACARDS REMOVED. THIS ACTION CLEARS DMI #4107. (STATUS:SUPP/CLOSED)