Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 685

CESSNA
MODEL 208B 867 SHP
GARMIN G1000
NORMAL PROCEDURES
The TKS Ice Protection System should not normally
be activated in dry, cold air. The ice protection fluid
is designed to mix with water impinging on the
airplane surface in normal operation. If dispensed
in dry, cold air, the fluid becomes a gel that takes
considerable time to clear, particularly on the
windshield.
The windshield pump cycles for approximately 4 seconds each time it is
activated. The windshield will take approximately 30 seconds to clear
after the spray cycle has ended. Ice should not be allowed to
accumulate on the windshield. Activate the windshield pump as
necessary to maintain clear forward vision.
Refer to Airplane and Systems Descriptions, TKS Ice Protection
System Operation, Indication and Messaging in this supplement for
description and operation of TKS indications.
•
Other than the prescribed preflight steps outlined in
this section, BACKUP mode should not be used
during normal operations. It is intended for
emergency use only (as detailed in the Emergency
Procedures of this supplement). When operating the
TKS Ice Protection System use Normal Procedures,
and make sure that the BACKUP Switch is selected
to OFF.
•
Simultaneous operations of the PRIMARY switch
selected to either NORM or HIGH and the BACKUP
switch selected to ON will increase fluid flow rates
without making the appropriate adjustments to the
time remaining function displayed on the MFD.
There are no system annunciations for operating the
system in BACKUP mode. The time remaining
function
unreliable;
unchanged.
FAA APPROVED
208BPHCUS-S1-00
(Continued)
WARNING
CAUTION
of the system
fluid quantity
SECTION 9 - SUPPLEMENTS
SUPPLEMENT 1
display will become
accuracy remains
U.S.
S1-33