As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C18 CHECK DISCOVERED TWO CRACKS, .890 INCHES EACH, LOCATED AT THE AFT PIT DOOR INNER CHORD AND SUPPORT ANGLE AT BS 800 AND STR 20R. MAINTENANCE REMOVED SUPPORT ANGLE AND CHORD IAW BOEING 737-300 SRM 51-70-13-0G FIG 1. FABRICATED REPAIR DOUBLER AND REPAIR ANGLE IAW BOEING 737-300SRM 51-70-13-0G. INSTALLED FABRICATED REPAIR PARTS IAW BOEING 737-300 SRM 51-70-13-0G.