Dual Heated Pitot Static System - Cessna 310 1975 Owner's Manual

Each heating period lasts for approximately one-half
minute.
EMERGENCY PROCEDURES
Abnormal operation of the propeller deice system is
indicated by the propeller deice switch breaker tripping to
the OFF position. Failure of the switch breaker to stay
reset indicates that deicing is impossible for the propel-
lers.
A reading below the green arc on the propeller deice
ammeter indicates that the blades of the propeller are not
being deiced uniformly.
WARNING
When uneven deicing of the propeller blades
is indicated, it is imperative that the
deicing system be turned OFF. Uneven de-
icing of the blades can result in propeller
unbalance and engine failure.
DUAL HEATED PITOT STATIC SYSTEM
The dual heated pitot static system consists of a pitot
head located on each side of the fuselage nose cap, the
pilot's and copilot's pitot static instruments, dual static
sources for the pilot's and copilot's instruments and an
alternate static source for the pilot's instruments only.
See Figure 6-2 for pilot's and copilot's airspeed calibra-
tions when using normal static source. Refer to the Pilot's
Checklist for the pilot's instruments airspeed and altimeter
calibrations when using the alternate static source.
The pilot's instruments are connected to the left pitot
tube and the upper left and right static sources located on
the aft fuselage. When the alternate static source is se-
lected, the pilot's instruments reference the static pressure
in the cabin.
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