What was found
DURING HEAVY MAINTENANCE: "PASSENGER CABIN, UPPER SURFACE FLOOR BEAM STRUCTURE, FR 16, BTW 'Y' - 254 AND 'Y' 254, WITH CORROSIONS (3); "RAIL DUMMY PN: D5311283020200 WAS REPLACED IN FR12 TO FR16 Y81 I.A.W A320 SRM 51-72-11-911-001 / 51-72-11-911-00 REV.: 149 DATE: 01/MAY/24 ALL WORK ACCOMPLISHED ON MEXICANA WO 1282422, 131- 2003 NR 00582.