dow to flood cabin compartment for eqiializing pressure so
that
door
can be
opened.
(7)
Inflate
life
vests and
raft
(if available) after evacuation of cabin.
The
aircraft
can not be
depended
on for
flotation
for more
than
a
few minutes.
DISORIENTATION
IN CLOUDS.
When
flying
in marginal weather, the
pilot
should make sure
that
the
Wing
Leveler control knob (if installed) is ON. However, if the airplane
is
not equipped
with
this
device
or gyro horizon and directional gyro in-
struments,
the
pilot
will
have to rely on the
turn
coordinator (or
turn
and
bank indicator) if he inadvertently flies
into
clouds. The following instruc-
tions
assume
that
only one of the
latter
two instruments is available.
EXECUTING
A 180°
TURN
IN CLOUDS.
Upon entering the clouds, an immediate plan should be made to
turn
back as follows:
(1) Note the time of the minute hand and
observe
the position of the
sweep
second
hand on the clock.
(2) When the
sweep
second
hand indicates the nearest
halt-minute,
initiate
a standard rate
left
turn,
holding the
turn
coordinator sym-
bolic airplane wing opposite the lower
left
index mark for 60
seconds.
Then
roll
back to level
flight
by leveling the miniature airplane.
(3) Check acciiracy of the
turn
by observing the
compass
heading
which
should be the reciprocal of the
original
heading.
(4) If
necessary,
adjust heading
primarily
with
skidding motions
rather
than
rolling
motions so
that
the
compass
will
read more ac-
curately.
(5)
Maintain
altitude
and airspeed by cautious application of elevator
control.
Avoid
over
controlling
by keeping the hands off the control
wheel and steering only
with
rudder.
EMERGENCY
LET-DOWNS
THROUGH
CLOUDS.
If
possible, obtain radio clearance for an
emergency
descent
through
clouds. To guard against a
spiral
dive,
choose
an easterly or westerly
heading to minimize
compass
card swings due to changing bank angles.
In
addition,
keep
hands off the control wheel and steer a straight
course
with
rudder control by monitoring the
turn
coordinator. Occasionally
3-5
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