What was found
RIGHT UPPER FUSELAGE SKIN CRACKED ON FRAME 75, AT THE 1ST FASTENER BELOW STRINGER 2R. CRACK IS APPROX 1/2" LONG. EASI 8071 USED, 100-500KHZ PROBE, FREQ=400 KHZ, V-GAIN=78.0, H-GAIN=65.0, LPF=100. ACCOMPLISHED REPAIR TO RT UPPER FUSELAGE SKIN CRACKS IAW ERS-EM-53MR-1748.