What was found
WHEN IN TURBULENCE, UTILITY BUS DROPS OFF LINE AND THEN BACK ON MOMENTARILY. FLIGHT ATTENDANTS COMPLAIN OF OVENS, LIGHTS AND VIDEO SYSTEM GO OFF/ON AS WELL, MASTER CAUTION (L UTIL BUS) (R UTIL BUS) OVERHEAD UTILITY BUS LIGHT ON & R REC LIGHT (CONTINUOUS DURING TURBULENCE). T/S PER WDM 24-51-15 AND FIM TASK 24-51-00-815-802 REMOVED AND REPLACED K10109 AND REMOVED AND REPLACED BUS POWER CONTROL UNIT. LEFT AND RIGHT UTILITY BUSSES CHECK NORMAL NO FAULTS NOTED. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1458101 SN OFF 02250 CONTROL, BUS PO OFF 99-2441-9-0001 2250 ON 99-2441-9-0001 2315.