What was found
LEFT HORIZONTAL STABILIZER LOWER SKIN CRACKED AT STAB STA. 129.5 24" FWD IF THE AFT SPAR. APPROX. 1.250" LONG (AS MARKED). GROUNDED - YES. REPAIRED LEFT HORIZONTAL LOWER SKIN AT STAB STA 129.5", 24" FWD OF AFT SPAR USING MAT: 2024-T3 .100" ALCLAD DOUBLER AND 2024-T3 .071" ALCLAD FOR FILLER. REMOVED AND INSTALLED PANELS 331B AND 335A ALL WORK ACCOMPLISHED IAW B737-SRM 55-10-01-2R-11 REPAIR 11. B737-800 AMM 55-10-00-000-801, AMM 55-10-00-400-801, AMM 27-41-21-000-801, AMM 27-41-21-400-801. THIS A CATEGORY B REPAIR 56,000 FLT CYCLES THRESHOLD.