5-4-9
Flight in Icing Conditions - Balked Rate of Climb
The use of Flaps 30° or Flaps 40° is prohibited in or into known icing conditions.
After icing encounters and with visible ice accretion on the airframe, a balked landing climb is
performed with Flaps 15° and a climb speed of 105 KIAS. The total climb performance is
calculated by first computing the Rate of Climb in non-icing conditions from
(standard units) or
(metric units) and then correcting the Rate of Climb in or into
known icing conditions by using the corrections in
Table 5-4-9-1: Icing Corrections to Balked Landing Climb with Operational Pneumatic De-ice
Boots
Rate of Climb Correction (feet per minute)
Altitude (ft)
Landing Weight (kg (lb))
2900
(6393)
3500
(7716)
4500
(9921)
0
-140
-100
-80
2000
-140
-100
-80
4000
-150
-100
-80
6000
-150
-100
-80
8000
-150
-110
-90
10000
-160
-110
-90
12000
-150
-110
-80
14000
-150
-110
-80
After failure of the airframe pneumatic boots in icing conditions, a balked landing climb is
performed with Flaps 0° and a climb speed of 130 KIAS. The total climb performance is
calculated by first computing the Rate of Climb in non-icing conditions from
(standard units) or
(metric units) and then correcting the Rate of Climb in or into
known icing conditions by using the corrections in
Table 5-4-9-2: Icing Corrections to Balked Landing Climb with Pneumatic De-ice Boots inoper-
ative
Rate of Climb Correction (feet per minute)
Altitude (ft)
Landing Weight (kg (lb))
2900
(6393)
3500
(7716)
4500
(9921)
0
-580
-450
-320
2000
-620
-480
-340
4000
-670
-520
-360
6000
-700
-540
-380
8000
-740
-580
-400
10000
-780
-610
-420
12000
-800
-630
-440
14000
-950
-750
-530
Section 5 - Performance (EASA Approved)
Flight in Icing Conditions - Balked Rate of Climb
Pilot's Operating Handbook
Report No: 02406
Issue date: Mar 06, 2020
Page 5-4-9-1
12-C-A15-60-0504-09A-030A-A
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