What was found
MCI - DURING OP 16 MAINTENANCE CHECK, FOUND A .50 INCH CRACK IN MEMBRANE AT LONGERON 18L, STA 234. REMOVED MEMBRANE AT L18L, FS 218 TO FS 237 PER DAC SRM 51-61 PAGE 1. FABRICATED COMPLETE PART FROM SAME MATERIAL PER DAC SRM 53-10-2, FIG 4 SHEETS 1 AND 2, ITEM 3. INSTALLED RIVETS PER DAC SRM 51-30-2 PAGE 1, AND BOLTS PER DAC SRM 51-30-1 FIG 1. ACFT TT: 77,783 HOURS. ACFT TC: 84,471. (X)