What was found
(CAN) DEFECT WAS FOUND DURING CARRYING OUT INSPECTION OF AREA WITH BORESCOPE PER S/B 998A VIA INSPECTION HOLE. NO OTHER DEFECT, CRACK, ETC. IT APPEARS FAULTY RIVET WAS NOT BUCKED TIGHT ENOUGH AT A PREVIOUS MODIFICATION INSTALLATION AND FRETTED LOOSE. NEW RIVET INSTALLED. NOTE: S/B 998A NOW SUPPORTED BY A/D 99-12-05 WHICH BECOMES EFFECTIVE NEXT 23 JULY/99 PERSUING REPETITIVE 100 HR INSPECTION, BUT ADDED 1000 HRS LIFE TO ELEVATORS OR IF CRACKS FOUND IN ELEVATOR.