Piper AZTEC D PA-23-250 Owner's Handbook Manual page 51

THE PIPER AZTEC "D"
SECTION Ill
moderate power settings, the propeller on the dead engine shoold
be feathered by pulling the throttle to idling position and the
prop pitch control back fully; then the mixture should be set at
idle cut-off and the ignition off. Best single engine performance
will be obtained with the dead engine wing held up about 3
degrees higher than level to help counteract the tendency to
turn in that direction.
CAUTION ·
If the left engine has failed, the hydraulic pump
will not be functioning. If it is necessary to
lower the landing gear or flaps
w~th
the left
engine dead, the hydraulic hand pump located
in the pedestal is used. (See 5, this section.)
2. Feathering:
The Hartzell feathering propellers can only be feathered
while the failed engine is rotating, and not if the engine drops
below 1000 RPM. The loss of centrifugal force due to slow RPM
will activate a stop pin that keeps the propeller from feathering
each time the engine is shut down on the ground. If an engine
freezes up, it will be impossible to feather its propeller. Single
engine flight can be maintained with the dead engine propeller
unfeathered, although a noticeable decrease in single engine
performance will take place.
If
an engine failure occurs during take-cif run, the power
on the good engine should be cut and the airplane stopped
straight ahead. If
it
occurs after leaving the ground, but with
sufficient landing area still ahead, a landing should be effected
immediately. If no landing can be made directly after the failure,
the following steps should .be followed:
a. Apply full power to good engine.
b. Feather dead engine.
c. Retract landing gear and flaps, if extended (using hand
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