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PA-46-350P, MALIBU
When in visible moisture at temperatures at or below +5°C and icing
conditions are anticipated, turn on the windshield heat LO switch. If low
windshield heat is inadequate or if icing is encountered at temperatures at or
below -15°C, turn on the windshield heat HI switch.
Depending on ambient temperatures, when switching from
HIGH to LOW windshield heat, a WINDSHIELD HEAT
FAIL annunciation may occur until the windshield surface
temperature cools to the low heat temperature range.
The "Windshield Heat Fail" annunciator light will illuminate
when a failure in the temperature sensor has occurred. As a
result of this failure a possible over temp. of the windshield
may result with windshield heat switch HI or LO turned on. In
the event of the illumination of this annunciator the windshield
heat switches should IMMEDIATELY be placed in the OFF
position. Failure to select windshield heat OFF could result in
severe damage to the windshield.
Windshield heat may be used to help clear the windshield during descent
from high altitude.
SECTION 5 - PERFORMANCE
No change.
SECTION 6 - WEIGHT AND BALANCE
Factory installed optional equipment is included in the licensed weight
and balance data in Section 6 of the Pilot's Operating Handbook.
SECTION 7 - DESCRIPTION AND OPERATION OF PROPELLER
The presence of one or more items of deicing equipment does not imply
the capability to fly into forecast or known icing. The equipment is provided
to enlarge the options available to the pilot as he takes appropriate action to
avoid icing that is inadvertently encountered.
Controls for the components are situated in the switch panel located
above the right radio stack. (Figure 2-1).
WING ICE DETECTION LIGHT
Wing icing conditions may be detected during night flight by use of an ice
detection light installed on the left side of the forward fuselage. The light is
controlled by an ICE LIGHT switch (Figure 2-1) situated in the switch panel
located above the right radio stack. Circuit protection is provided by an ICE
circuit breaker located in the EXTERIOR LIGHTS section of the pilot's aft
circuit breaker panel.
ISSUED: FEBRUARY 23, 1999
HEAT, HEATED WINDSHIELD, AND WING ICE
DETECTION LIGHT
NOTE
CAUTION
SECTION 9
SUPPLEMENT 2
REPORT: VB-1710
3 of 6, 9-11
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