What was found
SAW - DURING CPCP-4 INSPECTION TASK CARD ZL-141-GVI-10020-001, MAINTENANCE DISCOVERED FLOOR BEAMS 36, 38, 39 WERE CORRODED OUT OF LIMITS. MAINTENANCE REMOVED AND INSTALLED NEW FLOOR BEAMS IAW SRM 51-25-02. AIRCRAFT RETURNED TO SERVICE. REF: OPERATOR CONTROL NR SIMA97205-3 AND 97ZZZX3535.