What was found
CRACKED INDICATION FOUND: L/H HORIZONTAL LOWER SKIN I/B OF STA.147.90, 16.5" AFT OF L/E, 2.150" FWD OF REPAIR DOUBLER, MARKED AT .320"L .DOT: A373 GROUNDED - YES. REPAIRED THE L/H HORIZONTAL LOWER SKIN AT APPROX. 147.9 USING DOUBLER MAT.100 2024-T3 AND FILLER MAT. .071 2024-T3 PER B737-800 SRM 55-10-01-2R-11. REPAIR IS A CATEGORY "B" REPAIR WITH INSPECTION THRESHOLD 56,000 TOTAL FLIGHT CYCLES PER B737-800 SRM 55-10-01-2R-11.5 REMOVED DOT.