Piper cherokee WARRIOR - ENGINE POWER LOSS IN FLIGHT AND FORCED LANDING; In-Flight Power Loss Actions and Forced Landing

CHEROKEE
WARRIOR
ENGINE POWER IJOSS
IN FLIGHT
Complete enghe
power
los is usually
caused
by fuel flow intemrption, and
power
will be
restored shortly
after fuel flow
is restored. If
power
loss occurs
at
low
altitude, the first step is
to
prepare
for
an emergency landing
(See
POWER
OFF
LANDING).
Maintain
an airspeed of at
least 85 MPH,
and
if altitude
permits,
proceed
as follows:
l.
Fuel
Selector
-
Switch to another
tank containing fuel.
2. Electric Fuel Pump
-
On
3.
Mixture
-
Rich
4.
Carburetor
Heat
-
On
5.
Engine
Gaups
-
Check
for
indication
of the cause
of
power
loss.
6.
Primer
-
Check
locked
7. If
no fuel
pressure
is indicated,
check tank selector
position
to
be sure it
is
on a tank
containing fuel.
When
power
is restored:
E.
Carburetor
Heat
-
Off
9.
Electric
Fuel Pump
-
Off
If the above steps do not
restore
power, prepare
for
an
emergency landing.
If
time
permits:
l. Ignition Switch
-
"L"
then
"R"
then back to
"BOTH."
2. Throttle and Mixture
-
Different
settings.
(This
may restore
power
if the
problem
is
too rich or too lean a mixture,
or
partial
fuel system restriction.)
3.
Try
another
fuel
tank.
(Water
in the fuel
could
take
some
time to be used
up,
and
allowing the engine
to windmill may restore
power.
If
power
loss
is
due to
water, fuel
pressure
indications will
be normal.)
NOTE
If engine failure
was caused
by fuel exhaustion,
power
will not
be
restored after
tanks are switched
until empty fuel lines are
filled,
which may
require up to ten
seconds.
If
power
is
not restored,
proceed
with
POWER
OFF
LANDING
procedure.
FOWER
OFF
LAI{DING
If loss of
power
occurs at altitude, trim
the aircraft for best
ghding
angle 85 MPH, and
look
for
a
suitable field. If measures taken
to restore
power
iue not effective,
and
if
time
permits,
check
your
charts
for
airports in the immediate vicinity;it
may
be
possible
to land at one if
you
have
sufficient
altitude.
If
possible,
notify the FAA
by radio of
your
difficulty and intentions.
If another
pilot
or
passenger
is
aboard, let them
help.
When
you
have located
a suitable field,
establish a
spiral
pattern
around
this field. Try to
be 1000 feet
above the field
at the downwind
position
to make a normal approach.
When
the
field
can easily be
reached, slow up
to
76
MPH
for the
shortest landing.
Excess
altitude may be
lost
by widening
your
pattern,
using flaps
or
slipping,
or a combination
of
these.
EMERGENCY PROCEDURES
ISSUED:
ruLY
17,1973
4-2