PS Magazine - TB 43-PS-713
PS, The Preventative Maintenance Monthly
ISSUE 713
APRIL 2012
24
PS 713
APR 12
25
PS 713
APR 12
Turnlock fasteners, nuts and bolts that secure
access doors, panels and covers should not have
missing, loose or the wrong type of hardware,
such as a screw that’s too long.
For example, turnlock fasteners on Black
Hawk
and
AH-64
airframes
are
sometimes
reinstalled without the retaining star washer.
Turnlock fasteners installed without the star
washer can vibrate loose and fall out during
±ight. If that happens, the fastener can ricochet
off the spinning tail rotor blades, hit the stabilator
like a missile and punch a hole in it.
When
doing
aircraft
daily
and
pre-±ight
inspections, double-check your helicopter air-
frame for missing, loose or incorrect hardware
and ²x the problem. Check your -23P manual for
the right size and type of hardware to use.
Hang
Your
Helmet
Anywhere?
Not!
All Aircraft…
Don’t Forget Hardware
UH-60A/L…
Hang
Your
Helmet
Anywhere?
Not!
making sure airframe
hardware is
tight and secure
during daily and
pre-flight inspections
is
good preventive
maintenance!
that’s
a wrap
for
me
on
my daily
inspection.
hold
up guys,
I thnk
I’ve got
a missing
screw.
yeah, my
turnlock
fasteners
are missing
a few star
washers,
too!
you might
wanna
come back
and check
us out,
again!
looks like
my
aircraft
is good to
go, too!
pilots and co-pilots, the hgu-56/p
aircrew integrated helmet system (aIhs)
can sit on two places in your black hawk
cockpit—your head or the hooks!
problem is, if
the hooks are
missing, some
think the next
best hanger
for the
helmet is the
# 1 or 2 eng
emer off fire
handles.
levers and handles
are not strong enough
to support the weight
of a helmet.
it will fall off
and
damage
center
console knobs,
switches, screens and
other components.
make sure your cock-
pit has hooks. if they
are missing, get them
replaced so you can
hang your helmet in
the right place.
have your mechanic
order hooks with
nsn 5965-00-052-
7
596
and the rivets with
nsn 5320-00-
7
54-0992.
not so!
hanging
your helmet
on any
lever or
handle on
the upper
console is
a
bad idea.
The last
thing you
need is
unnecessary
damage to
the center
console
caused by
a falling
helmet.
the Hooks are
located on either
side of the upper
console.
use them.
713 24-25.indd
1-2
2/24/12
2:12 PM
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