What was found
LEFT UPPER FUSELAGE SKIN CRACKED JUST AFT OF FRAME 75 & ABOVE STRINGER 2L. CRACK IS APPROX 3/8" LONG. EASI 8071 USED WITH A 100-500KHZ PROBE, 400KHZ, V-GAIN=77.0, H-GAIN=64.0, LPF=100. FUSELAGE SKIN CRACK REPAIRED IAW ERS-EM-53MR-1566. SEE WIPS & TASKS FOR DETAILS OF WORK PERFORMED.