What was found
CORROSION.>>>>>VERTICAL FIN FWD R/H ATTACHMENT FITTING LUGS STA 1016 INNER BORE EVIDENCE OF PITTI CORROSION. ; / [01] REMOVED CORROSION ON VERTICAL FIN FWD R/H ATTACHMENT FITTING LUGS STA. 1016 PER REF. 737 SRM 51-10-02-0G-0; BY REAMING HOLE TO FINAL SIZE; 1.040;( ON FUSELAGE); [02] VERIFIED STEP 1.; [03] PREVIOUS HOLE SIZE ENTERED IN ERROR; ACTUAL FINAL HOLE SIZE IS 1.015'; CALIPER B/C #163379-A; DUE DATE 17JUL22; [04] PERFORMED AN HFEC HOLE PROBE INSPECTION OF THE BORES PER 737 NDT MANUAL PART 6; 51-00-00; PROCEDURE 16; USING 0.03 NOTCH CALIBRATION. NO CRACKS.<BR>[NORTEC 500D; B/C 172390; CALIB.DUE -7/22]; [05] PERFORMED EA 21-153-02990. REF FAULT TTG8Q006HQ4R).; [06] VERIFIED STEP 3; [07] VERIFIED STEP 5