Boeing 747 - Page 86

Table 1: Screen Location of Internal Reflections and Back Surface Signals (Continued)
ENGINE
CONFIGURATION/
PART NUMBER
STRUT
*[1]
FUSE PIN BACK SURFACE SIGNAL
INTERNAL
REFLECTION
POSITION RANGE
%FSW
*[2]
TRANSDUCER
GUIDE/HOLE
POSITION
METAL DISTANCE POSITION
IN. MM %FSW
*[2]
AIRPLANES RB013-
RB016
69B89612-3 I/B 2.937 74.6 59% 20% - 30% NDT4120G1/C
65B94182-3 I/B 2.937 74.6 59% 20% - 30% NDT4120G1/C
---- O/B NO INSPECTION REQUIRED
REFERENCE
STANDARD NDT4115
----- 4.115 104.5 82% 25% - 35% -----
REFERENCE
STANDARD NDT4123
---- 2.440 62.0 98% 90% ----
*[1]
I/B = INBOARD; O/B = OUTBOARD
*[2] %FSW = POSITION OF THE SIGNAL AS A PERCENTAGE OF FULL SCREEN WIDTH
Table 2: Reference Standards and Transducer Guides
FUSE PIN 65B94182-8
REFERENCE STANDARD NDT4123
TRANSDUCER POSITIONER NDT4123P
ALL BUT THE 65B94182-8 FUSE PINS
REFERENCE STANDARD NDT4115
TRANSDUCER GUIDE NDT4120G1
747
NONDESTRUCTIVE TEST MANUAL
PART 4 54-30-10
Page 6
Nov 15/2015D6-7170
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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