What was found
DURING HEAVY MAINTENANCE: CORROSION ON FLOOR STRUCTURE BTW 1732 AND FR-20; "FUSELAGE FLOOR STRUCTURE, WEB AT Y 1732 BETWEEN FR 20/FR 24 WAS REPLACED I.A.W. A320 S.R.M. 51-72-11-911-001 MAY 01/24 REV.149 AND SRM 51-42-11 MAY 01/- 24 REV.149. ALL WORK ACCOMPLISHED ON MEXICANA WO 1282422, 131- 2003 NR 00597.