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(7) Check
trend
of
compass
card
movement
and
make
cautious
cor-
rections
with
rudder
to
stop
the turn.
(8)
Upon
breaking
out
of clouds
resume
normal
cruising
flight.
RECOVERY
FROM
A SPIRAL DIVE.
If
a spiral
is
encountered,
proceed
as
follows:
(1) Close
the throttle.
(2)
Stop
the turn
by using
coordinated
aileron
and
rudder
control
to
align
the
symbolic
airplane
in
the turn
coordinator
with
the
horizon
reference
line.
(3) Cautiously
apply elevator
back pressure
to
slowly
reduce
the
in-
dicated airspeed
to
90
MPH.
(4) Adjust
the
elevator
trim
control
to
maintain
a 90
MPH
glide.
(5)
Keep
hands off
the
control wheel,
using
rudder
control
to
hold
a
straight
heading.
(6) Apply
carburetor
heat.
(7)
Clear
engine
occasionally,
but avoid
using
enough
power
to
dis-
turb the trimmed
glide.
(8)
Upon breaking
out of clouds,
apply
normal
cruising
power
and
resume
flight.
FIRES.
ENGINE FIRE DURING
START
ON GROUND.
Improper
starting
procedures
such as
pumping
the throttle
during
a
difficult
cold weather
start
can
cause
a backfire
which
could ignite
fuel
that
has accumulated
in
the
intake
duct.
In
this
event,
proceed
as
follows:
(1) Continue
cranking
in
an attempt
to
get
a start
which
would
suck
the
flames
and accumulated
fuel
through the
carburetor
and
into
the
engine.
(2)
If
the
start
is
successful,
run
the
engine
at
1700
RPM
for a few
minutes
before shutting
it
down
to
inspect
the
damage.
(3)
If
engine start
is unsuccessful,
continue
eranking
for
two
or
three
minutes
with
throttle
full
open while
ground attendants
obtain
fire
extinguishers.
(4)
When ready
to
extinguish
fire,
release
the
starter
switch and
turn
off master
switch,
ignition
switch, and fuel selector
valve
handle.
3-6
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