What was found
DOT A24-77 FORWARD PIT. VERTICAL INTERCOSTAL AT STATION 480+15 BETWEEN STRINGERS 23L AND 25L CRACKED AT UPPER EDGE. BLENDED DAMAGE IAW SRM 51-10-02-0G-0. FOUND ADJACENT TO BLEND .040'; LOSS .007'; REMAINING .033' USING NDT TO VERIFY IN STEP 5. UPON FURTHER INVESTIGATION FOUND INTERCOSTAL TO BE OUT OF LIMITS IAW SRM 53-00-04-1A-1<BR>UT IAW B737 NDT PART 4; 51-00-00 PROC 2. ADJACENT TO BLEND .040'; LOSS .007'; REMAINING .033'. REMOVED; LOCATED & DRILL HOLES NEW FORMED ANGLE IAW SRM 51-40-05-0G-0 AND SRM SRM 51-40-02-0G-0<BR><BR>PERFORMED COMFORMITY INSPECTION OF NEW PART AND VERIFIED INTERCOSTAL P/N 143A9403-14 COMFORME TO SPECIFICATIONS FOUND IN BOEINGDWG 143A9403 REV:-. MIX SEALANT 870 B 1/2 APPLIED FAY SEAL TO INTERCOSTAL AT 2.00 PM SQUEEZE -OUT 1/2 HRS CURE TIME 20 HRS AND INSTALLED INTERCOSTAL ALL FASTENERS BEFORE SQUEEZE OUT TIME IAW SRM 51-40-02-0G-0 AND DWG 143A7550 REV: A.