What was found
D:ON APPROACH NOT IN ICING CONDITIONS EICAS POSTED MESSAGE OF R WSHLD HEAT. FOLLOWED QRH AND MESSAGE IMMEDIATELY RETURNED. SELECTED R WSHLD SWITCH TO OFF AND NOTED ARCING BETWEEN THE PANES. APPROX 20? OF LENGTH. / C: MEL 30-41-1B / CAT C DUE 02-09-22 / NOTE: MX ACTION C/W / ON APPROACH NOT IN ICING CONDITIONS EICAS POSTED MESSAGE OF R WSHLD HEAT. FOLLOWED QRH AND MESSAGE IMMEDIATELY RETURNED. SELECTED R WSHLD SWITCH TO OFF AND NOTED ARCING BETWEEN THE PANES. APPROX 20€? OF LENGTH. (FILED-CLOSED) COMPLIED WITH TASK CARD 56-220-1000-SKY FOR THE REMOVAL AND REPLACEMENT OF THE R/H WINDSHIELD. LEAK CHECK GOOD.