As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE PYLON AFT BULKHEAD UPPER INBD CORNER FLANGE AREA INSIDE HAS A DISCONTINUITY INDICATION WHICH WAS CONFIRMED BEING CRACKED APPROX .5" BY VERIFYING WITH BOROSCOPE INSPECTION AS SEEN THROUGH THE FOOTBALL PANEL. R & R THE AFT PYLON BULKHEAD IAW EA 8-5410-163804 INSTRUCTIONS.