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rate of ice accumulation is slow, best results can be ob-
tained by leaving the deice system OFF until 1/4 to 1/2 inch
of ice has accumulated.
After clearing this accumulation
with one or two cycles of operation, the system should remain
OFF until a significant quantity of ice has again accumulat-
ed.
Rapid cycling of the system is not recommended, as this
may cause the ice to grow outside the contour of the inflated
boots, preventing its removal.
NOTE
Since wing and horizontal stabilizer deice
boots alone do not provide adequate protec-
tion for the entire aircraft, known icing
conditions should be avoided whenever pos-
sible.
If icing is encountered close at-
tention should be given to the pitot-static
system, propellers, induction systems, and
other components subject to icing.
The deice system will operate satisfactorily on either
or both engines.
During single-engine operation, suction to
the gyros will drop momentarily during the boot inflation
cycle.
DEICE BOOT CARE
Deice boots have a special, electrically-conductive
coating to bleed off static charges which cause radio inter-
ference and may perforate the boots.
Fueling and other
servicing operations should be done carefully, to avoid
damaging this conductive coat or tearing the boots.
Keep the boots clean and free from oil and grease, which
swell the rubber. Wash the boots with mild soap and water,
using benzol or unleaded gasoline, if necessary, to remove
stubborn grease.
Do not scrub the boots and be sure to wipe
off all solvent before it dries.
Small tears and abrasions can be repaired temporarily
without removing the boots and the conductive coating can be
renewed.
Your Cessna Dealer has the proper materials and
know-how to do this correctly.
7-9
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