As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - FOUND TWO RIVETS SHEARED OFF ON CENTER WING TO FUSELAGE CLOSING ANGLE ON RIGHT SIDE OF A/C. ONE RIVET WAS 7 INCHES FORWARD OF FRAME 10790, AND ONE RIVET 18 INCHES AFT OF FRAME 10790. MAINTENANCE REMOVED THE DAMAGED CHERRY RIVETS AND INSTALLED CHERRY RIVET IAW F-28 STRUCTURAL REPAIR MANUAL 51-31-05.