As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT WINDOW FRAME AT BS 500 HAS THREE SMOKING RIVETS AT LWR AFT CORNER. REMOVED 3 RIVETS FROM LOWER AFT CORNER OF WINDOW FRAME IAW SRM 51-42-05. INSTALLED 3 RIVETS INTO LOWER AFT CORNER OF WINDOW FRAME IAW SRM 51-42-05, REF DWG 85360031, REV N.