Cessna Skyhawk Owner's Manual page 32

CARBURETOR AIR TEMPERATURE GAGE (OPT).
Generally,
the
painted surfaces
can be kept bright
by washing with
Icing Range
. . . . . . . . . . . . .
-15°
to
5°C
(yellow arc) water and mild soap, followed by a rinse with water and drying with cloths
or a chamois. Harsh
or abrasive soaps or detergents
which cause
cor-
rosion
or make
scratches should never be used.
Remove stubbbrn oil
W ElGHT A ND BA LA NC E.
and grease with a cloth
moistened
with Stoddard solvent.
The following
information will enable you
to
operate your
Cessna
with-
Waxing is unnecessary
to
keep
the
painted
surfaces bright. However,
in
the
prescribed
weight and center
of gravity
limitations. To figure
the
if
desired,
the
airplane
may be waxed
with a good automotive
wax. A
weight
and
balance
for your particular airplane, use
the
Sample
Problem,
heavier
coating
of wax on
the
leading edges
of
the
wings
and
tail
and
on
Loading
Graph, and
Center
of Gravity Moment Envelope as follows:
the
engine nose cap and propeller spinner will help reduce
the
abrasion
encountered
in
these
areas.
Take
the
licensed
Empty
Weight
and
Moment/1000 from
the
Weight
and Balance Data sheet, plus any
change
noted on forms FAA-337, When
the
airplane is parked outside in cold climates and
it is neces-
carried
in your
airplane,
and write
them
down in
the
proper columns. sary
to
remove ice before flight, care should be
taken to
protect
the paint-
Using
the
Loading Graph, determine
the
moment/1000
of
each item
to
ed surfaces
during ice removal with chemical liquids. A
50-50 solution
of
be carried. Total
the
weights
and
moments/1000 and use
the
Center of
isopropyl alcohol
and water
will
satisfactorily
remove ice accumulations
Gravity Moment Envelope
to
determine whether
the
point falls within
the
without
damaging
the
paint. A solution with more
than
50°/o
alcohol is
envelope, and if
the
loading is acceptable. harmful and should be avoided. While applying
the
de-icing solution, keep
it away from
the
windshield and cabin side windows since
the
alcohol
will
NOTE
attack
the
plastic
and may cause it
to
craze.
The Weight
and
Balance Data
Sheet
noted above is included
in
the
aircraft
file. The Loading Graph
and Center
of Gravity
Moment Envelope shown in
this
section are also
on
the
sheet
A LUMI NUMSURF A CE S.
titled
Loading/Center
of Gravity
Charts and
Weighing
Pro-
cedures which is provided in
the
aircraft
file.
The clad
aluminum surfaces
of your
Cessna
may be washed with
clear water
to
remove
dirt; oil and grease may be removed with gasoline,
SAMPLE AIRPLANE YOUR AIRPLANE
naptha,
carbon
tetrachloride
or other
non-alkaline
solvents.
Dulled
alu-
SAMPLE LOADING PROBLEM Moment Moment
minum surfaces may be cleaned
effectively with an aircraft aluminum
Weight
(lb. -ins.
Weight
(ib. -ins.
-
.
-
(lbs.)
/1000)
(lbs.)
/1000)
pOllSh.
1. Licensed Empty Weight (Sample Airplane).
. .
1306 47.6
After cleaning,
and
periodically
thereafter,
waxing
with a good auto-
motive wax will preserve
the
bright appearance and retard corrosion.
2. Oil (B gts.
-
Full oil may be assumed
ror
au
nients).
.
16
-0-2
15
-0-2 Regular waxing is especially recommended for
airplanes
operated in
3-
Fuel (Standard
-
38
Gal
at 6#/Gal).
. . . . . . .
228 10.9
Salt
water areas as a protection against
dorrosion.
Fuel
(Inng
Range
-
48
Gal
at
6#/Gal).
. . . .
4. Pilot and Front Passenger
. . .
.
. . . . .
340 12.2
PROPELLERC A R
E.
5. Rear Passengers
. . . . . . . . . . .
340
23.8
6.
saggage
(or
rassenger
on Auxinary
seat)
. . .
21 6-7
Preflight inspection of propeller blades for
nicks,
and wiping
them
2300 101.0
Occasionally
with an oily cloth
to
clean off grass and bug stains
will as-
sure
long,
trouble-free
service. It is vital
that
small nicks on
the
pro-
8. Locate this poinL (2300 at 101.0)
on the cenler
of gravity moment envelope,
peller;.
particularly near
the tips
and on
the
leading
edges,
are dressed
and since this point falls
within
the envelope, the loading
is
acceptable.
out as soon as possible since
these
nicks
produce stress concentrations,
3-4
4-3