PS Magazine - TB 43-PS-699
PS, The Preventative Maintenance Monthly
ISSUE 699
FEBRUARY 2011
38
PS 699
FEB 11
39
PS 699
FEB 11
The spindle is heavy. You
must use a rubber mallet to
break the seal and remove it
from the main rotor hub after
unbolting it. If all of the bolts
are removed when you tap the
spindle, it could fall free.
If that happens, the 65 pound
spindle could land on your feet,
the hydraulic deck, the engine
or the ground below. Leave
two or three bolts in place but
loosened so the spindle doesn’t
jump out at you before you can
attach the hoist and sling.
The spindle horn is a critical safety item so follow every step like it says in WP
0560 00 of TM 1-1520-237-23-7 when removing it.
M
echanics, some parts of your aircraft need covers and some don’t.
One part in particular that does not require protective caps is the electro-optic
missile sensor (EOMS). When the common missile warning system (CMWS) gets
installed on your bird, some think the caps that come with the EOMS are for use on
the EOMS. That’s not the case. The EOMS doesn’t require caps when installed on
the aircraft.
The EOMS protective caps are only used for shipping and storage of the sensors.
They are absolutely not for use as sensor covers on the aircraft!
Leaving the covers on the sensors while
the aircraft sits on the Fight line is a ±OD
problem you don’t need. And leaving a
cover on an EOMS while on a mission
impairs the systems’ ability to protect the
aircraft from a threat. If just one cover
is
accidentally
overlooked,
then
that
quadrant of the missile detection system is
rendered defenseless and makes the aircraft
vulnerable to attack.
Keep the sensors
uncovered
until they are removed from the
aircraft for shipping or storage.
Make sure you pass on the good word to other mechanics, too.
Working on the Spindle
UH-60 Series…
Working on the Spindle
All Aircraft…
Don’t
Cover
the
Sensors!
mechanics,
here’s a way
to
avoid
pain
when removing
the black
hawk spindle
horn for
inspections.
Don’t remove
all the bolts
from the
spindle at the
same time!
these
caps
come in
handy!
hold up!
those are
for shipping,
not for my
sensors!
Don’t remove all bolts before
using mallet to break seal
Never leave caps on sensors
Use protective
caps on sensors
for shipping
and storage
only!
699.38-39.indd
1-2
12/27/10
4:46 PM
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