What was found
AFT FUSELAGE SECTION L-17L AT STA 1770.000 CRACKED 4.000 (MAJOR REPAIR). PERFORMED MAJOR REPAIR. REMOVED L-17L WITH CRACK IN IT IAW SRM 51-1-21 PG 1, SRM 51-3-0 PG 1. CLEANED, TREATED AND PRIMED AREA IAW SRM 51-1-8B. INSTALLED NEW LONGERON IAW SRM 51-1-21 PG 1, SRM 51-3-0 PG 1, SRM 51-1-15 PG 1.