Boeing 747 - Page 55

4
2
3
1
2
1
3
4
60%
40%
20%
80%
100%
10 0
8
6
2
4
ON
OFF
10P
10N
0
0
20 40
60
E
D
U
A
+5
+1
2.25
5
1
OFF
P
/
4 6 8
10
20
0
2
4
6
8
10
%
IT IS POSSIBLE THAT INTERNAL REFLECTIONS WILL
OCCUR IN THIS RANGE - IGNORE THESE SIGNALS
FUSE PIN PART NUMBER
FOR THE CORRECT LOCATION OF THE SIGNALS FOR EACH
DIFFERENT LENGTHS ARE EXAMINED. REFER TO TABLE 1
SURFACE SIGNAL WILL CHANGE WHEN FUSE PINS OF
BACK SURFACE SIGNAL. THE LOCATION OF THE BACK
INITIAL PULSE SIGNAL
MONITOR THIS AREA DURING THE INSPECTION
NOTES: _____
ADJACENT STRUCTURE IS NOT SHOWN
TRANSDUCER INSPECTION AREA
TRANSDUCER
DIAGONAL BRACE
TRANSDUCER
GUIDE
BUSHING/FUSE
PIN WITH INSERT
REMOVED
2130667 S0000459175_V1
Fuse Pin Inspection Area
Figure 6
747
NONDESTRUCTIVE TEST MANUAL
PART 4 54-30-07
Page 11
Nov 15/2015D6-7170
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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