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165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
135
LOCKING
ARRANGEMENTS.--Constantly
inspect
the
locking
arrangements
of
turnbuckles,
bolts,
etc.
Pay
particular
attention
to
the
control
cable
connections,
and
to
all
moving
parts
in
respect
of
the
controls.
LUBRICATION.--Keep
all
moving
parts,
such
as
pulleys,
control
levers,
and
hinges
of
controlling
surfaces,
well
greased.
SPECIAL
INSPECTION.--Apart
from
constantly
examining
the
aeroplane
with
reference
to
the
above
points
I
have
made,
I
think
that,
in
the
case
of
an
aeroplane
in
constant
use,
it
is
an
excellent
thing
to
make
a
special
inspection
of
every
part,
say,
once
a
week.
This
will
take
from
two
to
three
hours
according
to
the
type
of
aeroplane.
In
order
to
carry
it
out
methodically,
the
rigger
should
have
a
list
of
every
part
down
to
the
smallest
split-pin.
He
can
then
check
the
parts
as
he
examines
them,
and
nothing
will
be
passed
over.
This,
I
know
from
experience,
greatly
increases
the
confidence
of
the
pilot,
and
tends
to
produce
good
work
in
the
air.
WINDY
WEATHER.--The
aeroplane,
when
on
the
ground,
should
face
the
wind;
and
it
is
advisable
to
lash
the
control
lever
fast,
so
that
the
controlling
surfaces
may
not
be
blown
about
and
possibly
damaged.
"VETTING"
BY
EYE.--This
should
be
practised
at
every
opportunity,
and,
if
persevered
in,
it
is
possible
to
become
quite
expert
in
diagnosing
by
eye
faults
in
flight
efficiency,
stability,
and
control.
The
aeroplane
should
be
standing
upon
level
ground,
or,
better
than
that,
packed
up
into
its
"flying
position."
Now
stand
in
front
of
it
and
line
up
the
leading
edge
with
the
main
spar,
rear
spar,
and
trailing
edge.
Their
shadows
can
usually
be
seen
through
the
fabric.
Allowance
must,
of
course,
be
made
for
wash-in
and
wash-out;
otherwise,
the
parts
I
have
specified
should
be
parallel
with
each
other.
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