As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - "C" - DURING C-17 CHECK A CRACK WAS FOUND ON THE F/O'S SLIDING WINDOW FWD POST UPPER CORNER BS 220. MAINTENANCE CUTOUT THE DAMAGED AREA OF CRACKED SKIN AT THE F/O'S SLIDING WINDOW AND PERFORMED HFEC INSPECTION TO CONFIRM CRACK WAS CONTAINED. FABRICATED -2 FILLER AND -1 DOUBLER AND INSTALLED REPAIRS AT BS 220 IAW B737-300 SRM 53-10-01, FIG 210, PG 231-234.