What was found
MAJOR REPAIR - UPON INSPECTION OF THE AIRCRAFT A FRAME SECTION WAS FOUND BUCKLED AT F.S. 13255 AT APPROXIMATELY FRAME 39 AT THE LOWER CENTER FRAME SECTION. UPON INSP OF THE ACFT A FRAME SECTION WAS FOUND BUCKLED AT FS 13255 AT APPROX FRAME 39 AT THE LWR CTR FRAME SECTION. MX REPLACED THE LWR CTR FRAME39 AT FS 13255 AND STR 19L IAW EO 09120-53-016 RII INSPECTIONS COMPLIED WITH IAW EO 09120-53-016. MATERIALS UTILIZED ARE INCLUDED IN THE EO.