What was found
FOUND DURING C SCAN OF LT LOWER SKIN OF HORIZONTAL STAB, CRACK INDICATION AT STATION 138.70, BETWEEN RIVET 16 & 17, 17 INCHES FROM LE OF SKIN. CRACK MEASURES 1/2 INCH LONG & MARKED WITH RED GREASE PENCIL. REPAIRED CRACK & INSTALLED REPAIR DOUBLER AT LT HORIZONTAL STAB, AT STATION 138.70 IAW SRM 55-10-01 REPAIR 11. ALL PARTIAL WORK NOTED. DIP ISSUED TO ACCOMPLISH BOTH DETAILED VISUAL & EXTERNAL LFEC INSPECTIONS, EVERY 9,000 FLIGHT CYCLES, WITH AN INSPECTION THRESHOLD OF 56,000 TOTAL COMPONENT FLIGHT CYCLES. INSPECT AT THRESHOLD OF 56,000 TOTAL COMPONENT FLIGHT CYCLES & REPEAT AT INTERVALS OF EVERY 9000 FLIGHT CYCLES THEREAFTER.