What was found
RIGHT HORIZONTAL STABILIZER LOWER SKIN IS CRACKED AT STAB STA 138.70, APPROX 10" FROM FWD EDGE OF SKINDOT 262A001. GROUNDED - YES. REPAIRED CRACK ON RIGHT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 138.70, APPROX 10" FROM FWD EDGE OF SKIN IAW B737-800, SRM 55-10-01-2R-11, PG 3, STEP H. THIS IS A CAT B REPAIR WITH AN INSPECTION THRESHOLD OF 56,000 TOTAL FLIGHT CYCLES WITH AN INSPECTION INTERVAL OF 9,000 FLIGHT CYCLES. AIRCRAFT TOTAL FLIGHT CYCLES AT TIME OF REPAIR IS 14,880. PER B737-800, SRM 55-10-01-2R-11, PG 7, STEP 5.