Hartzell HC-D2MV20-3 Series, Owner'S Manual And Logbook

Page: 61 / 204

Propeller Owner's Manual
140
DESCRIPTION AND OPERATION
61-00-40
Page 2-21
Nov/02
5. Pilot Operating Instructions
A. Non-governing (Hydroselective Propeller)
(1) Push the propeller pitch control forward to increase RPM
and pull the propeller pitch control back to decrease
RPM. The blade pitch will follow the propeller pitch control
command precisely and the propeller RPM will reflect the
movement immediately.
(2) If flight speed or throttle is changed, the RPM will change
and a manual adjustment of the propeller pitch control will
be required to reacquire the same RPM.
(3) Constant RPM will not be maintained as with governor
controlled propeller blade angle.
(4) Warm-up
Perform engine start and warm-up per the Pilot's
Operating Handbook (POH). During this process the pitch
control should be forward (low pitch position).
(5) Take-Off
No pitch control is necessary. The RPM should increase
to nearly the desired climbing value by the time the
airplane leaves the ground without changing the pitch
control.
(6) Climb
If RPM exceeds the limit allowed per the Pilot's Operating
Handbook (POH), pulling back on the pitch control will
decrease RPM until the desired value is reached.
(7) Cruise
Pull the pitch control out to select RPM for cruise. Select
RPM for best fuel consumption in accordance with Pilot's
Operating Handbook (POH).
(8) Long Range Cruise
Maximum cruise economy dictates low airspeed, low
RPM and fairly high manifold pressure. For these
conditions the pitch must be high. Obtain the higher pitch
and lower RPM with the pitch control pulled out to obtain
a desired value of RPM and manifold pressure per the
Pilot's Operating Handbook (POH).