What was found
PDX FLIGHT NR 2442 - AFTER PUSH BACK WHEN CONDITION LEVERS WERE BROUGHT UP OUT OF START AND FEATHER, THE NR 2 AC GEN CAUTION LIGHT FAILED TO GO OUT. THE RAC BUSS CAUTION LIGHT WAS NOTED TO BE ON ALSO. A BUSS RESET ATTEMPT CAUSED THE RAC BUSS CAUTION LIGHT TO GO OUT BUT NOT THE NR 2 AC GEN CAUTION LIGHT. MAINTENANCE REMOVED AND REPLACED THE NR 2 AC GENERATOR IAW MTC 6242101. ALL CHECKS GOOD. NO LEAKS DETECTED. NO ABNORMALITIES OBSERVED AFTER THE NR 2 AC GENERATOR WAS REPLACED. AIRCRAFT RETURNED TO SERVICE.