CAB-30-02
Page 18
May 17, 2013
Caravan
SERVICE BULLETIN
CAB-30-02
WARNING:
Do not run the TKS ice protection system in dry, cold air. The ice
protection fluid is designed to mix with water that impinges on the
surface of the airplane during normal operation. If you run the system
during dry, cold air conditions, the fluid becomes a gel that takes much
time to clear, particularly from the windshield.
B.
Turn the BACKUP switch to ON.
NOTE: During the initial operation of the TKS system, the low pressure WARN annunciator may
initially come ON and then should go out as the system begins to flow and to build pressure.
C.
Walk around the airplane and make sure that there is a fluid flow to each porous panel that goes
the full length of the panel.
NOTE: At fluid temperatures that are above 59 °F (15 °C), fluid viscosity is such that the operating
pressure may not cancel the low pressure WARN annunciator. At these fluid temperatures,
you must make sure visually of the full-length fluid flow to each porous panel to make sure of
correct operation of the system. After initial operation, the low pressure WARN annunciator
should not come ON during in-flight system operation with the outside air temperature
(OAT) below 46 °F (8 °C).
16.
Make an entry in the airplane logbook stating this service bulletin has been installed.
17.
After the accomplishment of this service bulletin you must do inspections based on the intervals specified
for airplanes equipped with the TKS system. (Refer to the Model 208 Maintenance Manual, Chapter 5.)
Summary of Contents for Cessna 208B
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