As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELEC LIGHT ILLUMINATED AFTER GROUND POWER DROPPED OFF LINE AND BUSSES SWITCHED BAC TO APU POWER. GROUNDED - YES. P5-13 BITE SHOWS "SPCU INOP". ACCOMPLISHED FIM 24-34 TASK 802, CYCLED C/B'S, CLEARED FAULT MSG. FAULT WAS INTERMITTENT. NO HISTORY LAST 30 DAYS.