Diamond DA40 NG - Propeller and RPM Systems; Propeller Description and Governor Operation; RPM Malfunctions and Procedures

53
Com
p
iled b
y
Peter Schmidleitner
DA40 NG
105
Propeller
 3-blade wooden propeller
 Constant speed
 Prop pitch set by ECU via an electro-
mechanical actuator on the governor
 Governor operated by gearbox oil
 Oil pressure up = pitch up = RPM down
 Oil pressure down = pitch down = RPM up
Com
p
iled b
y
Peter Schmidleitner
DA40 NG
106
RPM malfunctions