TM 55-1520-240-23-4
5-66.3
TITANIUM NOSE CAP LIGHTNING STRIKE REPAIR
(Continued)
5-66.3
f.
Remove loose particles. Wipe repair area
with cloth (E120) damp with acetone (E20).
Wipe dry with clean cloth before acetone
evaporates.
g.
Mask blade fairing (6) at repair area (4). Use
masking tape (E388) (7).
h.
Prepare adhesive (E40, E41 or E47.1) as
follows:
NOTE
Adhesive (E41) is preferred. Use
adhesive (E40) only if (E41) is not
available.
(1)
Mix tube of adhesive (E40). Follow
instructions on kit.
(2)
If adhesive (E40) is not available, prepare
adhesive (E41) as follows:
(a)
Weigh 100 parts of resin and 23
parts of hardener. Use trip balance.
(b)
Mix parts in polyethylene cup (E157)
until color is uniform. Use wood
spatula (E24).
(3)
If adhesive (E47.1) is used, prepare as
follows:
(a)
Weigh equal parts of adhesive
(E47.1) and curing agent (E158.1 or
E199.1) use trip balance.
(b)
Mix parts in polyethylene cup (E157)
until color is uniform. Use wood
spatula (E424).
i.
Fill repair area (4) with adhesive. Fair
adhesive to surrounding surface of nose cap
(2).
Do not exceed 160ºF (71ºC) at blade
surface. Damage to fiberglass can
occur.
j.
Cure adhesive at 150º - 160ºF (66º - 71ºC)
for 2 hours. Use heat lamp. Monitor
temperature. Use temperature indicating
strips (E413).
NOTE
Serviceable cure can be achieved
without heat at 70º - 80ºF (21º - 27ºC)
in 24 hours.
k.
Refinish repair area (4) (Task 5-82).
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