What was found
MCN - MAJOR REPAIR - "C" - DURING C-17 CHECK 1.3" CRACK WAS FOUND ON SKIN AT CAPTAINS WINDSHIELD ON THE AFT POST UPPER CORNER BS 200, STR 8L. MAINTENANCE CUTOUT AND REMOVED DAMAGED AREA OF SKIN AT AFT POST UPPER CORNER AND FOUND GUSSET CRACKED APPROXIMATELY 1" TO A FASTENER HOLE. DAMAGED AREA OF GUSSET WAS CUTOUT AND BOTH AREAS WERE HFEC INSPECTED TO VERIFY CRACKS WERE CONTAINED. FABRICATED A -2 FILLER AND -1 DOUBLER AND INSTALLED REPAIRS IAW B737-300 SRM 53-10-01, PG 231-234.