What was found
DURING C4/S1 CHECK, INSPECTION REPORTED LT SUPPORT FRAME CORRODED BETWEEN FR 69 AND FR 70, JUST BEHIND FLOORBEAM -Y1292. FOUND SUPPORT FRAME TO BE OUT OF LIMITS IAW A319 SRM 51-74-00. REMOVED AND REPLACED SUPPORT FRAME IAW A319 SRM 51-72-11, PAGES 1 AND 2.