As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DECK STA 160 FRAME STRINGER 6L HAS 1 EA EXISTING ELONGATED HOLE AT STRINGER CLIP LOCATION (APPROX ELONG DIAMETER .350 INCH) STR 6L P/N 65B 14211-13. REMOVED AND REPLACED STR 6L AT STA 140 TO STA 200 PER B747 SRM 51-30-02 PAGES 2,3,5; FIG 7 PAGE 32.