What was found
RH HORIZONTAL STAB LWR SKIN PANEL, STAB STA 164, 11.75" FM AFT EDGE; ECA C-SCAN CRACK INDICATION VERIFIED BY MFEC PER B737 NTM PT 6, 53-30-18. REFER TO PEMCO NR 11015.0228. ACCOMPLISHED HORZ STAB LOWER INNER SKIN EXTERNAL REPAIR AT APPROX STA 164, 11.75" FROM AFT EDGE OF STAB PER SRM 55-10-01- 2R-11, REPAIR II, CAT B, INSPECT REQUIREMENTS AT 56000FC PER SRM 55-10-01-2R-11- TABLE 204, PG 7 PLACED ON DIP WITH INSPECTION THRESHOLD DETAILED INSPECTION AND EXTERNAL LOW FREQUENCY EDY CURRENT INSPECTION @ 56,000 CYCLES AND REPETETIVE INSPECTION AT INTERVALS OF 9,000CYCLES.