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SECTION
3
EMERGENCY
PROCEDURES
FORCED LANDINGS
CESSNA
MODEL R172K
If
all attempts to
t
imminent sel
t
~es art .the engine fail and a forced landing
is
cussed
in
'the
~~e~k~~
1
;~ble
fiel.d and prepare for the landing as dis-
s
or engme-off emergency landings.
Before attempting a
"
ff
.
,,
.
.
.
able,
one should dra
thn
°
~irport landmg with engme power
avail-
inspect the terrai f g
e landi?g area at a safe but low altitude
to
as
discussed und:
t~ c:struct~ons
and surface conditions. proceeding
checklist.
r
e
recautwnary Landing With Engine Power
Prepare for ditching b
·
ed in the baggage a
~ sec~rmg or jettisoning heavy objects locat-
pants
'
face at touchdrea an Tcollect folded coats for protection of occu-
.
.
own.
ransmit M
d
g1vmg
location and intenti
. ay ay :1'11essage on 121.5 MHz
culty
in judging height
ons. Avoid
a
lan
dmg flare because of diffi-
over a water surface.
LANDING WITHOUT ELEVATOR CONTROL
Trim for horizontal flight to
·
with
flaps set to 200 by using th a~t:irsp eed of approximately 65 KIAS
do not change the elevator trim
~~nt
e
~nd
e~ev~tor
trim control. Then
by
adjusting
power exclusively.
ro settmg, control the glide
angle
.
At flareout,
the
nose-down moment resultin
fr
is
an adverse
factor and the airplane may hit
o~ th~~
power reduction
sequently, at
flareout, the elevator trim control should o~e w~eel. Con-
ward
th~
full
nose-up position
and the
power adjusted soe ad3usted
~o
plane will
rotate to
the
horizontal
attitude
for t
hd
that
the air-
throttle
at
touchdown.
ouc
own. Close the
FIRES
.
Improper starting procedures
involving
the excessive us
.
iary f~el
pump
operation can cause engine
flooding
and
subse
of auxil-
puddlmg of
fuel
on the
parking ramp
as
the excess fuel d
. equent
board
~rom
the
intake
ports.
This
is sometimes
experienc~~I~s
0
.ve.r-
starts
111
cold weather where
preheat service is not av
- 1
b
n
difficult
occurs,
the
airplane
should be pushed
away
from the
tit
le.
If
this
another engine start is attempted. Otherwise, there
is~ ~~d?le
.before
raw
fuel accumulations in the exhaust system
igniting
d
p
.
sibihty of
gme start, causing a
long
flame from the tailpipe and
po ur.i::g
1:1-n en-
the fuel
puddle
on the pavement.
In
the event
th~t
this ssi ly igniting
in
accordance
with the Fire
During Start On Ground
choccklu~s.
proceed
ec
ist.
3-10
.,...
I
l
l
·
1 .
' 1 '
~
f
l
CESSNA
MODEL R172K
SECTION
3
EMERGENCY PROCEDURES
Although engine fires are extremely rare in flight, the steps of the
a
ppropriate
checklist
should be
followed
if
one
is encountered.
After
completion of this
procedure,
execute a forced
landing
as soon as possi-
ble. Do not
attempt
to restart
the
engine.
The initial indication of an electrical fire is
usually the
odor of
burning insulation. The
checklist
for
this
problem should result
in
elimination
of the fire.
EMERGENCY OPERATION IN CLOUDS
(Vacuum System Failure)
In the
event
of a vacuum system failure during flight
in
marginal
weather,
the directional indicator
and attitude
indicator
will
be dis-
abled, and
the pilot will have
to
rely on the
turn
coordinator or the turn
and
bank indicator
if
he inadvertently flies into
clouds.
The following
instructions assume that only the electrically-powered turn coordinator
or the
turn and bank indicator
is
operative, and that the pilot is not
completely
proficient in instrument flying.
EXECUTING A 180° TURN IN CLOUDS
Upon inadvertently 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 half-minute,
initiate
a standard rate left turn, holding the turn
coordinator sym-
bolic
airplane wing
opposite
the
lower
left
index mark for
60 se-
conds.
Then
roll
back to level
flight
by leveling
the miniature air-
plane.
(3)
Check accuracy 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
accurately.
(5) Maintain altitude and airspeed
by
cautious application of
eleva-
tor control. Avoid
overcontrolling
by keeping the
hands
off the
control wheel as much as possible and
steering
only with rudder.
EMERGENCY DESCENT THROUGH CLOUDS
If
conditions preclude reestablishment of VFR flight by a
180°
turn,
3-11
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