What was found
CORROSION ON UPPER FUSELAGE SKIN AT ADF ANTENNA FS409.00 + 84 TO FS409.00 + 87.5 LH STR 0 + 1 TO RH STR 0 + 2.5. ***AIRCRAFT REMOVED FROM SERVICE*** BLENDED CORROSION ON UPPER SKIN FS409.00 + 84 TO FS409.00 + 87.5 LH STR 0 + 1 TO RH STR 0 + 2.5. ORIGINAL THICKNESS 0.058" REMAINING THICKNESS OF 0.054" AND ORIGINAL THICKNESS OF 0.45" AND REMAINING THICKNESS OF 0.044". PERFORMED HFEC WITH NO INDICATIONS. RESTORED SURFACE FINISH. ALL WORK PERFORMED IAW EA#: AWAC-CRJ253-01632 REV IR DATED 5/11/2021