PS Magazine - TB 43-PS-603
PS, The Preventative Maintenance Monthly
ISSUE 603
FEBRUARY 2003
PS 603
FEB 03
37
FEB 03
36
OH-58D…
Guard
Against
FOD
With a
Cover
SGT James Burge
SGT T. A. Willemin
SGT Christian Bochler
F TRP 1-7 CAV
Ft Hood, TX
Attach cover
to firewall to
protect impeller
here’s
another good
idea to keep
PM going
strong!
Dear Sergeant Blade,
When we inspect, clean or perform maintenance
on our Kiowa Warrior’s air induction system, it
usually involves removing the engine cowling and
the particle separator cowling.
We inspect the particle separator swirl vanes
on the impeller for cracks or damage. Sometimes
we perform other maintenance on the engine, too.
But all too often the impeller is left unprotected
and is damaged by dropped tools or careless
feet. If that happens, the aircraft is NMC.
In addition, cleaning rags are
sometimes left in the impeller area while other
maintenance tasks are performed.
Once the bird is assembled, started and goes
out for a flight, that out-of sight, out-of-mind
rag becomes FOD. If it’s ingested through the
impeller vanes and into the engine, it could cause
engine and drive shaft damage.
We’ve come up with a bellmouth cover, painted
red and stenciled with the words “DANGER,”
that will protect the impeller vanes and keep FOD
out of the air inlet.
Have your AVIM shop use the following
dimensions and materials to make the cover.
Attach the mouth cover to the firewall while
doing maintenance.
(3) Ejector blades, 5325-00-276-4282
(3) Eyelet turnlock fasteners, 5325-00-281-4969
(3) Stud turnlock fasteners, 5325-01-408-4101
(6) 3-3 countersunk solid rivets, 5320-00-117-6937
(1) Aluminum alloy sheet, 2024-T3, 0.032-in,
or equivalent
hey sergeant
blade, it looks
like this cover
does the trick.
good job,
soldier!
the impeller
is proected
and out of
harms way like
the tm says.
use the cover
each time you
inspect the
air induction
system.
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