TM 55-1520-240-23-4
5-69
REPAIR BLADE FAIRING — PARTIAL DEPTH
(Continued)
5-69
c.
Set router bit (11) to extend only enough to
remove damaged core (12). If opposite skin
is damaged, make double skin repair (Task
5-70).
Wear goggles, respirator, and
protective clothing when using router.
Fiberglass particles will irritate eyes,
lungs, and skin.
Do not cut into spar. Spar damage
shall cause rejection of rotor blade.
d.
Start router (6). Grasp handles with both
hands, use wood platform (10) for support.
Move router around using outer line (4) as
guide for router base (5). Cut outline around
damaged area.
e.
Complete removal of damaged skin and core
(12).
f.
Turn router (6) off and remove it.
g.
Check that all damaged core (12) has been
removed. If necessary, increase depth of cut
and repeat steps c thru f. If depth of damage
exceeds 3/4 inch or half the core depth,
make a full depth repair (Task 5-68).
7.
Clean cutout (13). Use vacuum cleaner.
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