What was found
LCQ - MAJOR REPAIR - DURING C-17 CHECK HFEC INSPECTION INDICATED A CRACK ON BS 178 BULKHEAD LT SIDE CHORD, LBL 70, WL 207. MAINTENANCE REMOVED DAMAGED LT SIDE CHORD AT LBL 70, WL 207; FABRICATED A NEW REPLACEMENT CHORD; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02 FIG 8, PG 38.