As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT SIDE CHORD AT WL 207 ON AFT SIDE OF BS 178 BULKHEAD CRACKED IN RADIUS. REMOVED LEFT SIDE WEB, REMOVED LEFT SIDE CHORD; LOCATED, DRILLED AND INSTALLED NEW SIDE CHORD IAW B737-300 SRM 51-40-02 PG 1 AND 10; REINSTALLED WEB IAW B737-300 SRM 51-40-02 PG 1 AND 10.