What was found
FOUND DURING C SCAN OF LT LOWER SKIN OF HORIZONTAL STAB, CRACK INDICATION AT STATION 129.50, BETWEEN RIVET 9 & 10, AS MEASURED FROM AFT SPAR. CRACK LENGTH IS MEASURED 1 1/8 INCHES LONG. CRACK IS MARKED IN RED GREASE PENCIL. REPAIRED CRACK & INSTALLED REPAIR DOUBLER AT LT HORIZONTAL STAB LOWER SKIN, STATION 129.50 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.