What was found
CRACK FOUND ON RT HORIZONTAL STABILIZER LOWER SKIN. CRACK IS JUST INBD OF STABILIZER STA 147.9, APPROXIMATELY 9.25' FWD OF REAR SPAR AND IS APPROXIMATELY 0.875' LONG. NOTE: CRACKS .875, .906, .5. ACFT GROUNDED. FABRICATED & INSTALLED REPAIR ON LOWER STABILIZER SKIN BETWEEN STABILIZER STA 138.7 - 147.9 IAW SRM 55-10-01-2R-11, REPAIR 11, THIS IS A CAT "B" REPAIR WITH AN INSPECTION THRESHOLD OF 56,000 FLIGHT CYCLES AND REPAIR INSPECTION INTERVALS AT 9000 FLIGHT CYCLES. REPAIR IS ON "AT TASK" ITEM, COMPLETED MIG 57 ATTACHED. .