As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB IN CLOUDS AND PRECIPITATION, PILOTS HEARD SNAPPING SOUND. F/O FOUND COILED CORD FOR RH #2 WINDOW HEAT DISCONNECTED FROM BULKHEAD CANNON RECEPTACLE AND PLUG PINS ARCING FROM STATIC DISCHARGE. GROUNDED - YES. REMOVED & REPLACED RH SIDE WINDOW #2 IAW B737-900 AMM 56-12-11.