(a) To apply the coating, C50075, do this task: BMS10-60 Topcoat Application,
TASK 51-21-73-370-803.
SUBTASK 53-52-00-950-013
(13) Remove the Tape - Masking, G50509, or Scotch Brand No.471 tape, G02219.
NOTE: A nose radome protective boot can be used in place of the coating, C50075.
SUBTASK 53-52-00-370-036
(14) Apply decorative primer on 5 in. (127 mm) vertical band from STA 138.6 to STA 143.6
(Decorative Exterior Paint System Application, TASK 51-21-99-300-801).
SUBTASK 53-52-00-370-019
(15) Apply decorative paint to the entire surface of the radome (Decorative Exterior Paint System
Application, TASK 51-21-99-300-801).
NOTE: Refer to your livery drawing requirements.
G. Paint the Nose Radome before Installation of a Protective Boot
SUBTASK 53-52-00-370-037
(1) Apply coating, C00841, or coating, C50219, to the entire nose radome surface (Figure 701,
Figure 704, Figure 705).
(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:
1) Solvent clean using alcohol, B50073.
2) Lightly abrade with a very fine abrasive pad, Scotch-Brite 7447 pad, G50220.
3) Solvent clean using alcohol, B50073.
4) If necessary, use a 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 53-52-00-860-015
(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” (Figure 706).
2) Place the two pieces of tape at a distance of “0.1L ± 5 percent” and parallel to each
other (Figure 706).
3) Press the two pieces of tape firmly against the anti-static coating.
4) Connect the Ohmmeter probes to the tape (Figure 706).
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 709
D633A101-ILF Feb 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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