Propeller Owner’s Manual
175
Page 7-3
Rev. 1
Jun/11
ANTI-ICE AND DE-ICE SYSTEMS
61-00-75
1. Introduction
A. Propeller De-ice System
A propeller de-ice system is a system that removes ice
after it forms on the propeller blades. A de-ice system uses
electrical heating elements to melt the ice layer next to
the blades,
permitting
the ice to be thrown from the blade
by centrifugal force. Blades are alternately heated and
permitted
to cool as the current is applied and removed
automatically by the de-ice system time
r.
System components include a timer or cycling unit, electrical
slip ring(s), brush block assembly, and blade mounted de-ice
boots.
B. Propeller Anti-ice System
A propeller anti-ice system is a system that prevents
formation of ice on propeller surfaces. An anti-ice system
dispenses a fluid that mixes with, and reduces the freezing
point of, moisture on the propeller blades. The mixture may
then flow off the blades before it forms ice.
System components include a fluid tank, pump, slinger ring,
and blade mounted fluid feed shoes.
OBSOLETE PROPELLER MODELS. SEE COVER PAGE
WARNINGS AND SERVICE BULLETIN HC-SB-61-331
