(a) Identify the lightning diverter strips for re-installation.
SUBTASK 53-52-00-370-032
(2) Use Tape - Masking, G50509, or Scotch Brand No.471 tape, G02219, to mask-off the holes
from the removed lightning diverter strips and the conductor straps on the radome.
(a) Make sure that the coating, C00841, or coating, C50219, does not enter the holes from
the removed lightning diverter strips.
SUBTASK 53-52-00-150-001
(3) Remove the existing paint (PAINT STRIPPING - CLEANING/PAINTING,
PAGEBLOCK 51-21-11/701).
SUBTASK 53-52-00-100-002
(4) Clean and prepare the surface of the nose radome (TASK 51-21-21-100-802).
F. Paint the Nose Radome
NOTE: These instructions are for the finishes of a radome without a boot.
SUBTASK 53-52-00-370-004
(1) Apply coating, C00841, or coating, C50219, to the entire nose radome surface (Figure 702,
Figure 703).
(a) To apply coating, C00841, do this task: Apply BMS 10-21 Type II Conductive Coating To
Specified External Surfaces, TASK 51-21-71-370-802.
(b) To apply coating, C50219, do this task: Apply BMS 10-21 Type IV Conductive Coating To
Specified External Surfaces, TASK 51-21-71-370-803.
(c) If the anti-static coating is not overcoated within 24 hours, do the following before painting
the next layer:
1) Solvent clean using alcohol, B50073.
2) Lightly abrade with very fine abrasive pad, Scotch-Brite 7447 pad, G50220.
3) Solvent clean using alcohol, B50073.
4) If necessary, use tack rag, G50123, to remove particulate contamination.
5) Visually examine the anti-static coating surface to make sure that the coating is
continuous (no bare areas).
SUBTASK 53-52-00-860-013
(2) Measure the surface resistance of the BMS10-21, Type II, or BMS10-21, Type IV, using one of
the following methods:
(a) To measure the surface resistance using the square method, do the steps that follow:
1) Cut two pieces of flexible bare 3M 1181 copper foil tape, G50630, with conductive
adhesive each of length “L”.
2) Place the two pieces of tape at a distance of “0.1L ± 5 percent” and parallel to each
other.
3) Press the two pieces of tape firmly against the anti-static coating.
4) Connect the Ohmmeter probes to the tape.
5) Read the number for resistance.
6) Multiply the number for resistance by 10.
NOTE: The result is the resistivity of the anti-static coating.
7) Make sure that the resistance is between 1 and 100 megohms per square (square
of any dimension).
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-52-00
Page 703
D633A101-ILF Feb 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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