What was found
DURING MAINTENANCE INSPECTION AT IAI, SHOP FOUND A SUNKEN FASTENER HEAD ON THE EXTERNAL FUSELAGE SKIN AT STA 1728.5, STR 22R. IN ADDITION, 2.2” FROM THE NOTED AREA, SHOP PERFORMED CORROSION CLEANUP AND NDT THICKNESS INSPECTION ON THE EXTERNAL SKIN AND EOUND THAT THE ORIGINAL THICKNESS WAS 0.080” WHILE THE REMAINING THICKNESS IS 0.076” (WITHIN SRM 53-00-01 ALLOWABLE DAMAGE 1 LIMITS).