As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH FOR LANDING, NR 1 ENGINE STARTED TO YAW. LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE NR 1 DCA AMPLIFIER INOPERABLE, AND THE NR 2 DCA AMPLIFIER ERRATIC. REPLACED BOTH. REF: S-76 IPC, CHAPTER 76-11-00, FIG 1-14 AND FIG 1-16.