MODEL
402C
ENGINE OVERSPEED
EMERGENCY PROCEDURES
(AMPLIFIED PROCEDURES)
Should
an
overspeed
condition
occur,
the
pilot
should
reduce
airspeed
as
quickly
as
possible
by
closing both throttles. On reaching
an
airspeed below 120 KIAS and above the one
engine
inoperative
best
rate-of-climb
speed
(Blue
Radial).
set
the
propeller
control
on
the
overspeeding
engine
for
feather.
If
the
propeller
will
not
feather,
the
power
on
the
normally
operating
engine
should
be
advanced
to
maximum and
the
power
on
the
over-speeding
engine should
be
advanced to 50 RPM below the maximum allowable RPM (Red Line).
Maintain
the
one
engine
inoperative
best
rate-at-climb
speed
(Btue
Radial)
and
land
as
soon
as
practical.
This
will
provide
more
than
zero
thrust
at
altitudes
up
to
approximately
10,000
feet
During
landing,
the
application
of
partial
throttle
on
the
malfunctioning
engine
(within
limits
of
the
tachometer
red
line)
will
minimize
asymmetrical
thrust.
ENGINE FAILURE DURING FLIGHT
(Speed Above Air Minimum Control Speed)
1.
Inoperative
Engine
- DETERMINE.
Idle
engine
same
side
as
idle
foot.
2.
Operative Engine - ADJUST
as
required.
Before
Securing
Inoperative
Engine:
3.
Fuel Flow - CHECK. If deficient position auxiliary fuel pump switch to ON.
4. Fuel Selectors - MAIN TANKS (Feel For Detent).
5.
Fuel Quantity - CHECK. Switch to opposite MAIN
TANK
if necessary.
6.
Oil
Pressure
and
Oil
T
emperature
~
CHECK.
Shutdown
engine
if
oil
pressure
is
low.
7.
Magneto Switches - CHECK ON.
8.
Mixture
- ADJUST.
Lean
until
manifold
pressure
begins
to
increase
then
enrichen
as
power
increases.
If Engine Does Not Start, Secure
As
Follows:
9.
Inoperative Engine - SECURE.
a Throttle - CLOSE.
b.
Mixture - IDLE CUT-OFF. I
c.
Propeller - FEATHEA.
d.
Fuel Selector - OFF (Feel For Detent).
e.
Auxiliary Fuel Pump - OFF.
f.
Magneto Switches - OFF.
.
g.
Propeller Synchrophaser - OFF (Optional System).
h.
Alternator Switch - OFF.
i.
Cowl Flap - CLOSE.
10. Operative Engine
- ADJUST.
a Power -
AS
REQUIRED.
b.
Mixture - ADJUST for power.
c.
Fuel Selector -
AS
REQUIRED (Feel For Detent).
d. Auxiliary Fuel Pump - ON.
e.
Cowl Fiap -
AS
REQUIRED.
11. Trim Tabs - ADJUST
5'
bank toward operative engine with approximately 1/2 bali
slip
indicated
on
the
tum
and
bank
indicator.
12. Electrical Load - DECREASE to minimum required.
1 November 1979
Revision 5 - 16 March 1996
3-17
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