A
A
I
I
R
R
P
P
L
L
A
A
N
N
E
E
T
T
E
E
C
C
H
H
N
N
I
I
C
C
A
A
L
L
D
D
E
E
S
S
C
C
R
R
I
I
P
P
T
T
I
I
O
O
N
N
,
,
O
O
P
P
E
E
R
R
A
A
T
T
I
I
N
N
G
G
,
,
M
M
A
A
I
I
N
N
T
T
E
E
N
N
A
A
N
N
C
C
E
E
A
A
N
N
D
D
R
R
E
E
P
P
A
A
I
I
R
R
M
M
A
A
N
N
U
U
A
A
L
L
4-31
Document No.:
EV97SLNOEN
Date of Issue:
02/2008
Revision:
-
4.15.7 Winter operation
4.15.7.1 General
It is considered a winter operation, if the outside temperature falls below
41 °F
(+5
°C) .
4.15.7.2 Preparing the aircraft for winter operation
Aircraft airframe
Lubricate the aircraft per Lubricating Chart (100 hr. Inspection) if the last inspection was not
within 6 months
Check and adjust rudder control cable prestress
Check cockpit canopy rubber packing
–
replace if damaged
Check fuel tank venting
Check attachment of wing, ailerons, flaps and tail units; lubricate per Lubricating Chart
Engine
Refer to the Engine Manual for more details.
The following should be done:
Add Anti-freeze to the cooling system as reuired (usually a 50/50 mix.)
Change the oil (see Engine Manual or Service instructions)
Check the spark plug gaps
If low cylinder head or oil temperatures occur during operation under low outside temperature, then
do the following:
Cover a portion of the radiator face using an alluminum sheet, insert it between the radiator
and the lower engine cowling.
Cover the oil cooler face (or a part of face) using an alluminum sheet attached with a suitable
adhesive tape.
Cover the Reduction gear unit by means of a car engine cover
Cover the oil filter (see instructions for Reduction gear unit)
Cover the oil tank (see instructions for Reduction gear unit)
4.15.7.3 Operation
Preflight inspection
In addition to the Pre-flight inspection described in the POH, the following must be done:
Remove all snow from the airplane surfaces,and remove any icing using hot air
Check the control surfaces for free movement. Check the slots of the control surfaces and
flaps. Remove any snow or ice
Check the fuel tank vent hose for openness before each flight
Check fuel system (fuel filter) for debbris, if found, empty the fuel tank and refill with fresh fuel
Check fuel for water prior filling (use of water separator/filter is recommended)
Drain fuel tank (drain valve is located close to the right flap root), drain a small quantity of fuel;
check for water and other contaminates untill fuel is clean and clear.
