section IV
Normal Procedures
COLD
WEATHER OPERATION
PREFLIGHT INSPECTION
BEECHCRAFT
Duchess
76
I
All accumulations
of
ice, snow and frost must be removed
from the wings, tail, control surfaces and hinges, propellers,
windshield, fuel cell filler caps, crankcase vents, and fuel
vents.
If such accumulations are not removed completely,
the
airplane shall not
be
flown. The deposits will
not
blow off in
flight. While an adverse weight factor is clearly involved in
the
case of heavy deposits, it
is
less obvious that even slight
accumulations will
disturb
or completely
destroy
the
de-
signed aerodynamic properties of the airfoils.
The
normal preflight procedures should then
be
completed,
with particular attention given to check of flight controls for
complete freedom
of
movement.
ENGINES
Use engine oil in accordance with Consumable Materials
in
the
HANDLING,
SERVICING
AND MAINTENANCE section.
WARNING
Ascertain
that
magneto/start
switches
and
battery master switch are OFF before moving
propeller
by
hand.
Always pull
the
propeller through by hand, opposite the direc-
tion of rotation, several times to clear the engine and
"limber
up"
the cold, heavy oil before using the starter. This will also
lessen the load on
the
battery if external power is not used.
Under very cold conditions, it may
be
necessary to preheat
the engines prior
to
a start. Particular attention should
be
given to the oil cooler, engine sump and propeller
hub
to
)
4-16
April
1979
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