(Continued)
Reference Description Specification
C00259 Coating - Chemical And Solvent Resistant
Finish, Corrosion Inhibiting Primer
BMS10-11 Type I
C00528 Compound - Corrosion Preventive, Petroleum
Hot Application (Soft Film)
MIL-C-11796 Class III
C00767 Coating - Anti-Static Coating BMS10-21 Type III
C00862 Coating - Chemical Conversion - Bonderite
M-CR 600 Aero (Formerly Alodine 600)
E. Location Zones
Zone Area
190 Subzone - Wing-to-Body Fairing
191 Lower Wing-To-Body Fairing - Forward of Wing Box
192 Lower Wing-To-Body Fairing - Under Wing Box
193 Lower Wing-To-Body Fairing - Wheel Well
194 Lower Wing-To-Body Fairing - Aft of Wheel Well
195 Above Wing, Wing-To-Body Fairing - Left
196 Above Wing, Wing-To-Body Fairing - Right
F. Prepare for the Maximum Electrical Resistance Check
SUBTASK 53-51-21-211-002
(1) Make sure that the fastener locations for the designated bonds are identified.
(a) Refer to this task: Wing-To-Body Fairing Panel Designated Electrical Bond Visual
Inspection, TASK 53-51-21-211-801.
G. Check the Maximum Electrical Resistance of the Designated Bonds
SUBTASK 53-51-21-910-005
(1) Make sure that one fastener and one dimpled washer is installed in a designated bond location
in the panel.
(a) Refer to SWPM 20-20-00, Electrical Bonding of Fasteners To Conductive Finishes on
Composites.
(b) Make sure that the flushness for the fastener and the panel is 0.000 ±0.003 in.
(0.0000 ±0.0762 mm).
SUBTASK 53-51-21-800-001
(2) Put a dimpled washer in an adjacent designated bonded fastener location.
(a) Do not install the fastener at the adjacent designated bonded fastener location.
SUBTASK 53-51-21-200-001
(3) Connect the digital/analog multimeter, COM-1793 to examine the electrical resistance:
(a) Put one probe of a digital/analog multimeter, COM-1793 on the installed designated
bonded fastener head.
(b) Put the second probe on a dimpled washer in the adjacent designated bonded fastener
location.
NOTE: The dimpled washer completes an electrical bond between the panel conductive
surface and the probe. There must not be a fastener at this location.
SUBTASK 53-51-21-200-002
(4) Make sure that the resistance is not more than in the Table 601.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-51-21
Page 602
D633A101-ILF Feb 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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