What was found
NR 0488 48, FOUND 2 CRACKS IN THE CONSTANT SECTION OF THE HORIZONAL STABILIZER. CRACK NR 1 IN RT UPPER PLANK NR 7 (P/N 7228-1), CRACK IS .250 INCH LONG NR 7 BOLT HOLE FWD OF AFT END. CRACK NR 2 IS IN THE UPPER LT AFT CORNER 3 HOLE FWD OF AFT END, CRACK LENGTH IS .375 INCH LONG. PLANK (P/N IS 7227-1). BOTH CRACKS ARE WITHIN FLYABLE LIMITS AND ARE COVERED ON EO 8-5510-7-2307 H4 PART 1. THESE CRACK INITIATE SPECIAL INSPECTION TRACKING EVERY 3 MONTHS (PART 2 PER EO 8-5510-7-2307H4/-AD-88-03-08).