<1> Put the film resistance measure probe, SPL-10361, 1.00 ±0.25 in.
(25.40 ±6.35 mm) apart (Figure 709).
c) Record the value of the resistivity shown on the multimeter.
<1> The minimum allowable resistivity is 1 megohm per square.
<2> The maximum allowable resistivity is 100 megohm per square.
(d) To measure the surface resistance of the BMS10-21, Type II, or BMS10-21, Type IV,
using the Fastener-to-Fastener Test Method, do the steps that follow:
NOTE: The resistivity of the conductive coating after it is cured must be between 1 and
100 megohms per square.
1) Make sure that the conductive coating shows in the fastener location.
2) Clean the area with alcohol, B50073.
3) Install one temporary fastener at each fastener location to be measured
(Figure 709).
NOTE: This procedure can be used for measuring electrical resistivity of panels
with covered (painted) conductive coatings when the ground fastener
locations show.
4) Connect the digital/analog multimeter, COM-1793, probes at the two fastener
locations (Figure 709).
5) Record the value of the resistivity with the digital/analog multimeter, COM-1793.
a) The minimum allowable resistivity is 1 megohm per square.
b) The maximum allowable resistivity is 100 megohm per square.
6) Remove the temporary fasteners from the surface.
SUBTASK 53-52-00-370-034
(7) Remove the Tape - Masking, G50509, or Scotch Brand No.471 tape, G02219.
SUBTASK 53-52-00-950-001
(8) Use Tape - Masking, G50509, or Scotch Brand No.471 tape, G02219, to mask-off a 5 in.
(127 mm) vertical band from STA. 138.6 to STA. 143.6 (Figure 701).
SUBTASK 53-52-00-370-029
(9) Apply 0.3 - 0.8 mils of primer, C00766, from the radome tip to STA 138.6 and from STA 143.6
to the aft edge of the radome (Figure 702).
(a) To apply the primer, C00766, do this task: BMS10-103, Type 1, Primer - Application,
TASK 51-21-72-370-802.
SUBTASK 53-52-00-370-030
(10) Apply 1.4 - 2.4 mils of coating, C50075, from the radome tip to STA 138.6 and from STA 143.6
to the aft edge of the radome (Figure 702).
(a) To apply the coating, C50075, do this task: BMS10-60 Topcoat Application,
TASK 51-21-73-370-803.
SUBTASK 53-52-00-950-012
(11) Use Tape - Masking, G50509, or Scotch Brand No.471 tape, G02219, to mask-off the area
from STA 143.6 to the aft edge of the radome (Figure 701).
SUBTASK 53-52-00-370-031
(12) Apply 8 - 10 mils of coating, C50075, from the radome tip to STA 138.6 (Figure 702).
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-52-00
Page 708
D633A101-ILF Feb 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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