What was found
SELECTINS, WING HEAT AMBER "L VALVE & R VALVE" ILLUMINATED. 10 SECOND LATER MASTER CAUTION ILLUMINATED. GROUNDED - YES. PERFORMED L/H WING TAIV HEALTH CHK TO STEP H. VLV OPS REF AMM 30-11-11, CYCLE OPS NML. A.ROSEN 40129 08/30/2023WING THERMAL ANTI ICE VLV HEALTH CHECK COMPLETE. MOISTURE CLEARED USING PROCEDURES PER AMM 30-11-11. ENSURED C/B'S CLOSED. WAIV OPERATES NORMALLY WITH NO EXISTING FAULTS. WAIV FAULT CONSIDERED INTERMITTENT.