As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 6000 CYCLE AIRFRAME INSPECTION, FOUND LT AND RT CABIN FORMERS FRACTURED INTO 2 PIECES AT STA 177.00 AT WL 90-91 (APPROXIMATE) CAUSE OF FAILURE UNKNOWN (SUSPECT HARD LANDING). OBTAINED DER FOR REPAIR- CONSULTED MFG TECH SUPPORT ON FINDINGS. REMOVED AND REPLACED LT AND RT FORMERS. (K)