What was found
GOUGH AFT OF MAIN CARGO DOOR CORRECTIVE ACTION: CLASS I REPAIR INSTALLED ON L/H FUSELAGE STA 447.5 to STA 457.5, from LONGERON 16L-17L (DOUBLER) PER DC9 SRM 53-04 Pg 60 & DC9 SRM 51-30-5, Pgs 1-30. REPETITIVE INSPECTION REQUIRED PER DC9 SRM 53-04, FIG 12B, SHEET 1, Pg 53. NOTE: F5302 PLUS SKETCH SENT TO EIA ENGINEERING.