As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MULTIPULE CRACKS WERE FOUND ON FRAME 718 AFT INBOARD FLANGE. THE FIRST CRACK IS LOCATED IN THE MACHINED RADIOUS AND EXTENDS SIX INCHES FROM THE BASE. THE SECOND CRACK IS 2.5 INCHES LONG AND ORIGINATES AT THE LOWER THROUGH BOLT, EXTENDING TOWARD THE AFT EDGE OF THE FLANGE. MAINTENACE INSPECTED AND FOUND THE DAMAGE TO BE WITHIN LIMITS IAW DC9 SERVICE BULLETIN 53-100 AND ABX REA D953-42388.