As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COPILOTS HEADING INDICATOR WON'T AUTO SLAVE AND FLIGHT DIRECTOR DISAPPEARS. R & R NR 2 AHRS IAW AMM 34-20-05. PERFORMED COMPASS SWING, FOUND THE NR 2 AHRS UNIT RED FLAGED TWICE DURING COMPASS SWING. TROUBLESHOT SYS TO NR 2 AHRS. ALL WORK IAW AMM 34-20-05.