(b)
Add the catalyst to the base while you mix the base material.
(c)
Stop for a minimum induction time of 30 minutes before application.
S 377-069-B00
(2) Apply the anti-static coating, BMS10-21, Type II as follows:
NOTE: To apply the primer, the temperature must be between 40F and
____
100F.
(a) Use the spray equipment to apply a 0.0008 inch thick layer of anti-static coating, BMS10-21, Type II to the nose radome.
NOTE: Obey the pot life of the paint.
____
(b) Allow time for the anti-static paint to dry. You can accelerate the cure of the BMS10-21, Type II in accordance with BAC5639.
S 377-070-B00
(3)
Install the lightning diverter strips (AMM 53-52-03/201).
S 377-071-B00
(4)
Apply masking tape to a five-inch band area with tape, 3M #250 (A-A-883) all around the radome from STA 138.6 to STA 143.6.
S 377-072-B00
(5)
Mix the primer, BMS10-79, Type II as follows (AMM 51-21-99/701):
(a)
Mix the base material until it is smooth.
(b)
Add the catalyst to the base as you mix the base.
(c)
Stop for the necessary induction time of 30 minutes.
(d)
Add thinner, if necessary.
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S 377-073-B00
(6) Apply the BMS10-79, Type II as follows:
NOTE: To apply the primer, the temperature must be between 40F and____
100F.
(a) Use spray equipment to apply a layer of BMS10-79, Type II to a
thickness of between 0.0003 inch and 0.0008 inch to the radome
except for the band area that has masking tape between STA
138.6 and STA 143.6.
(b) Make sure the primer coating, BMS10-79, Type II covers the
entire external surface of the radome except for the band area
that has masking tape from STA 138.6 and STA 143.6.
(c) Let the primer coating, BMS10-79, Type II cure for 2 hours.
S 377-074-B00
(7) Mix the enamel coating, BMS10-60, Type II as follows (AMM
51-21-99/701):
(a) Mix the base material until it is smooth.
(b) Add the catalyst to the base while you mix the base material.
(c) Add a thinner if necessary.
S 377-075-B00
(8) Apply the enamel coating, BMS10-60, Type II as follows:
(a) Use spray equipment to apply a layer of enamel coating,
BMS10-60, Type II from 0.001 to 0.002 inch thick to the
external surface of the nose radome except for the area that
has masking tape from STA 138.6 to STA 143.6.
(b) Let the enamel coating dry.
S 377-076-B00
(9) Remove the masking tape around the band area from STA 138.6 to STA
143.6.
S 377-077-B00
(10) Apply masking tape and masking materials to the area of the nose radome forward of STA 138.6 and to the area aft of STA 143.6.
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(11) Apply a second coat of anti-static coating, BMS10-21, Type II to the band area only from STA 138.6 to STA 143.6.
(a) Let the anti-static paint dry using the accelerated cure in accordance with BAC5639.
S 867-079-B00
(12) Measure the surface resistance of the anti-static paint as follows:
(a)
Find 5 pairs of equidistant points in each quadrant of the anti-static paint band (20 total pairs).
(b)
Push the multimeter probes of the Fluke Model 87 Digital Multimeter, to each pair of the points on the anti-static paint.
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