What was found
MATERIAL THICKNESS OF FUSELAGE SKIN AT ADF ANTENNA IS BEYOND LIMITS SRM 51-01 LIMITS AFTER CORROSION REMOVAL. REMOVED OVERHEAD CEILING PANELS, A/C DUCTS FOR ACCESS TO THE ANTENNA AREA. REPAIRED CORRODED SKIN AREA UNDER AFT ADF LOOP ANTENNA IAW DC-9 53-04 FIG 29, REINSTALLED AC DUCT AND CEILING PANELS IAW DC-9 MM 25-22-0, 25-28-0, 20-11-0. (DOUBLER 28.5 BY 16) FINGER DOUBLERS 28.5 BY 3.