MOONEY
M20V ACCLAIM ULTRA
SECTION III
EMERGENCY PROCEDURES
3 - 18
AIRPLANE FLIGHT MANUAL
ORIGINAL ISSUE - 03-16-2017
An
interruption
in
fuel
flow
or
manifold
pressure
to
the
engine
will
result
in
turbocharger
“run-
down”.
At
high
altitude,
merely
restoring
fuel
flow
may
not
cause
the
engine
to
restart,
because
without
turbocharger
boost,
the
mixture
will
be
excessively
rich.
If
the
engine
does
not
fire,
there
will
be
insufficient
mass
flow
through
the
exhaust
to
turn
the
turbine.
This
condition
may
lead
one
turbocharger
begins
to
operate,
manifold
pressure
will
increase
and
mixture
can
be
adjusted
accordingly.
If
manifold
pressure
does
not
increase
then
the
turbocharger
has
failed.
If
turbo-
charger
failure
is
a
result
of
a
loose,
disconnected
or
burned
through
exhaust,
then
a
serious
fire
hazard
exists.
TURBOCHARGER OVERBOOST
If the turbocharger wastegate control fails in the CLOSED position, an engine power overboost
condition may occur. The following procedure is recommended for an overboost condition:
Throttle
REDUCE as required to keep manifold pressure within limits
. . . . . . . . . . . . . . . . . . . .
ENGINE ROUGHNESS
Engine instruments
CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Selector
OTHER TANK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mixture
READJUST for smooth operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magneto/Starter Switch
Select R or L or BOTH
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
If roughness disappears on single magneto, monitor power and continue on selected magneto.
-WARNING-
The
engine
may
quit
completely
when
one
magneto
is
switched
off
if
the
other
mag-
neto
is
faulty.
If
this
happens,
close
throttle
to
idle
and
mixture
to
idle
cutoff
before
turning
magnetos
ON
to
prevent
a
severe
backfire.
When
magnetos
have
been
turned
back
ON,
proceed
to
.
Severe
roughness
may
be
sufficient
to
cause
propeller
separation.
Do
not
continue
to
operate
a
rough
engine
unless
there
is
no
other
alternative.
Throttle
REDUCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
check for a throttle setting that may cause roughness to decrease
. . . . . . . . . . . . . . . . . . . . . . . .
If severe engine roughness cannot be eliminated,
LAND AS SOON AS PRACTICABLE
.
HIGH CYLINDER HEAD TEMPERATURE
Mixture
ENRICH As Required
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Airspeed
INCREASE As Required
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power
REDUCE - if temperature cannot be maintained within limits
. . . . . . . . . . . . . . . . . . . . .
HIGH OIL TEMPERATURE
-NOTE-
Prolonged high oil temperature indications will usually be accompanied by a
drop in oil pressure. If oil pressure remains normal, then a high temperature indi-
cation may be caused by a faulty instrument display or thermocouple.
Airspeed
INCREASE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power
REDUCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREPARE FOR POSSIBLE ENGINE FAILURE IF TEMPERATURE CONTINUES HIGH.
Revision A: 08-18-2017
