What was found
GEG FLIGHT NR 400, RIGHT AC BUS, RTRU, RIGHT STALL WARNING, NR 2 SPU AUXILLARY POWER, RIGHT ELEVATOR HORN HEAT CAUTION LIGHTS ILLUMINATED IN CRUISE. COMPLETED ASSOCIATED CHECKLIST, NO CHANGE, MAINTENANCE ADVISED TURN PROP HEAT OFF AND RESET NR 2 AC GENERATOR. ALL CAUTION LIGHT RETURNED TO NORMAL. MAINTENANCE REPLACED NR 2 PROP BRUSH BLOCK ASSEMBLY IAW AMM 61-10-11, PAGE 401-406. PERFORMED FUNCTIONAL TEST OF PROPELLER DEICING SYSTEM IAW AMM 30-60-00, PAGES 501-503. ALL SYSTEMS CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.