ANTI-ICE AND DE-ICE SYSTEMS
61-00-15
Page 7-4
Rev. 24 Dec/20
Propeller Owner's Manual
115N
C. Anti-ice System Operation
(1) The anti-ice system is typically controlled by the pilot
using a cockpit mounted rheostat. This rheostat controls
the pump
and the flow of anti-ice fluid from the fluid
tank.
(2) The anti-ice fluid is
pumped through airframe mounted
distribution tubing and into a rotating slinger ring that is
mounted on the rear of the propeller hub.
(3) From the slinger ring, centrifugal force pushes the
anti-icing
fluid through the fluid dispensing tubes o
nto
the blade mounted anti-icing boots.
(4) The anti-icing boots evenly distribut
e the fluid along the
leading edge of the propeller blade to prevent ice from
forming.
2. De-ice System Description
(Rev. 1)
WARNING:
CONSULT THE PILOT OPERATING
HANDBOOK (INCLUDING ALL
SUPPLEMENTS) REGARDING FLIGHT
INTO CONDITIONS OF KNOWN ICING. THE
AIRCRAFT MAY NOT BE CERTIFICATED FOR
FLIGHT INTO KNOWN ICING CONDITIONS,
EVEN THOUGH AN ICE PROTECTION
SYSTEM IS INSTALLED.
NOTE
: There are many configurations of de-ice
systems. This section provides a general
overview of system operation. Consult the
airframe manufacturer’s manual for a description
of your specific de-ice system and controls.
A. Overview of a De-ice System
(1) A propeller de-ice system removes ice after it forms
on the propeller blades. The system uses electrical
heating elements to melt the ice layer next to the
blade permitting the ice to be thrown from the blade by
centrifugal force.
B. Components of a De-ice System
(1) A typical de-ice system includes the following
components:
(a) ON/OFF switch(es), ammeter, timer or cycling unit,
slip ring, brush blocks, and blade mounted de-ice boots.
