What was found
LT UPPER AFT FUSELAGE SKIN CRACKED IN 2 PLACES; PLACE1: JUST AFT OF FRAME 75 AND ABOVE STRINGER 2L CRACK IS APPROX. 3/8' LONG (MARKED), PLACE 2:SKIN CRACKED AT FIRST FASTENER BELOW STRINGER 2L ON FRAME 75, CRACK IS APPROX. 1/4" LONG. EASI #8071 USED WITH 50-500KHZ PROBE, FREQ=400 KHZ, V-GAIN=78.0, H-GAIN=65.0, LPF=100, ANGLE=134.-C/A-COMPLETE:PERFORMED DOUBLER REPAIR AT LT UPPER FR. 75 ABOVE STRINGER 2 IAW SRM 53-31-01.