What was found
YVR - MAJOR REPAIR - DURING C-19 CHECK INTERGRANULAR CORROSION WAS FOUND AT SCREW HOLES ON THE UNDERSIDE OF INTERCOSTAL BEAMS BS 927 TO BS 1016. MAINTENANCE REMOVED ANGLE UNDER DOOR SILL CHORD AT R/H SIDE BS 967 TO BS 987; BLENDED CORROSION ON INTERCOSTALS BS 947, BS 993, AND BS 1007, MATERIAL LOSS WITHIN LIMITS; FABRICATED NEW REPLACEMENT ANGLE PER DWG 65-45855; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, PG. 3.