The procedures for selection of the ice protection systems are provided in Section 4, Normal
Procedures,
Flight into Known Icing Conditions
.
During all icing encounters or times with visible ice accretion on any part of the airframe the
flaps must not be extended beyond certain limits. These limits eliminate the possibility of
tailplane stall which results in an uncontrolled aircraft pitch down moment.
−
With operational airframe pneumatic deice boots 15° flap
−
After failure of the airframe pneumatic deice boots 0° flap.
For the minimum recommended speeds for icing encounters and with residual ice on the
airframe, refer to
.
Table 4-24-1: Minimum Recommended Speeds for Icing Encounters and with Residual Ice on
the Airframe
Configuration
Minimum recommended
speed (KIAS)
Climb, Flaps 0°, Pusher Ice Mode
135
Holding Pattern, Flaps 0°
145 to 175
Landing Approach, Flaps 15°, Pusher Ice Mode
105
Landing Approach, Flaps 0°, Boot Failure, Pusher Ice Mode
130
Balked Landing (Go-Around) Flaps 15°, LG down, Pusher Ice
Mode
105
Balked Landing (Go-Around) Boot failure, Flaps 0°, LG down,
Pusher Ice Mode
130
Flight in icing conditions is only permitted with full operational status of all aircraft de-icing
systems. This includes:
−
Propeller Deice
−
Wing and Horizontal Tail Deice Boots
−
Inertial Separator
−
Windshield Deice
−
Probes Deice
−
Stick Pusher Ice Mode
The propeller de-ice is activated from the ICE PROTECTION switch panel by the switch
labeled PROPELLER being pushed to ON. In this mode the propeller de-ice system will be
automatically selected to the correct cycle with reference to outside air temperature. No
further aircrew input is required. The green ICE PROTECTION caption PROPELLER will be
continuously illuminated. If a system failure occurs when activated, the green PROPELLER
caption will go off and the CAS caption
Propeller De Ice
will be illuminated and an aural
gong will sound.
Section 4 - Normal Procedures (EASA Approved)
Flight in Icing Conditions
Pilot's Operating Handbook
Report No: 02406
Issue date: Mar 06, 2020
Page 4-24-2
12-C-A15-30-0424-00A-131A-A
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