What was found
AIRCRAFT WAS GNDED, AIR INTERRUPT, EMER WAS DECLARED, LANDING UNEVENTFUL, ACAFT NOT OVERWEIGHT. DURING CRUISE, FIRST OFFICERS WINDOW CRACKED & WHOWED ELEC ARCING. T & R FIRST OFFICER, STRINGER R1 WINDOW AS IAW AMM 56-11-0. SYS CHECKED NORMAL.