As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE KEEL CHORDS AT STRINGERS 27L & 27R WERE FOUND CORRODED NEAR THE SPLICE END AT FS 727A. THE CHORDS WERE CUT AT FS 727B+10 AND THE CORRODED ENDS REMOVED. NEW SECTIONS OF CHORD WERE SPLICE IN WITH ALUMINUM REPAIR ANGLES PER ER/A 092557-14 AND ER/A 092126-14.