What was found
WHILE PERFORMING C-SCAN FOUND CRACK AT APPROXIMATELY STA. 500D+8 INCHES ALONG CHEM MILL AT STRINGER 4L. APPROXIMATELY 5 INCHES LONG(MARKED). WHILE PERFORMING C-SCAN FOUND CRACK AT APPROXIMATELY STA. 500D+5 INCHES TO STA 500D +10 INCHES ALONG CHEM MILL AT STRINGER 4L. APPROXIMATELY 5 INCHES LONG(MARKED). REMOVED PAINT. VERIFIED WITH (A) 737 PART 6 53-30-18 (MEDIUM FREQUENCY EDDY CURRENT) (C) 737 PART 4 53-30-07 (ULTRASONIC PHASED ARRAY) 2 OF THE INDICATIONS IN THE 5 INCH AREA ARE NOT CONNECTED.<