What was found
PAE - DURING 15K CHECK, CORROSION WAS FOUND ON FRAME AT Y1309, X PLUS 16, Z-40. CORROSION REMOVAL WAS WITHIN LIMITS. DURING REMOVAL OF FASTENERS FOUND CRACK IN FRAME AT Y1309, X PLUS 2, Z-43. STOP DRILLED CRACK, NDI VERIFIED CONTAINMENT. FABRICATED PARTS AND INSTALLED NEW PIECES IAW DC-9 SRM 51-10-03, 51-70-02 AND 53-01. (M)