PILOT’S OPERATING HANDBOOK
SECTION 4
NORMAL PROCEDURES
EASA Approved
Edition 0 -- October 31, 2013
Rev. 1
Page 4.5.3
FLIGHT INTO KNOWN ICING CONDITIONS (3/3)
3 - Procedures for holding, approach and landing in icing conditions :
-
Minimum recommended speeds are :
Weight
< 6579 lbs (2984 kg)
> 6579 lbs (2984 kg)
Flaps UP
130 KIAS
135 KIAS
Flaps TO
110 KIAS
110 KIAS
Flaps LDG
90 KIAS
95 KIAS
-
If there is ice on the unprotected surfaces of the airplane, during flight end phase, conduct holding with
the flaps up. Use flaps as required for final approach and landing at minimum speeds noted above.
Ice accumulation effects
When ice has accumulated on the unprotected surfaces of the airplane, aerodynamic characteristics may be
changed.
Particularly stall speeds may increase by up to :
-
Flaps UP
20 KIAS
-
Flaps TO
15 KIAS
-
Flaps LDG
10 KIAS
In case of severe or prolonged icing, an ice concretion due to refreezing around the heated stall warning may
appear. Above-recommended speeds take into account, on one side, the stall speed increase due to profile shape
deterioration and, on the other side, the weight increase of the iced-up airplane (taking as a basis the airplane
maximum weight when not iced-up).
Rate of climb values with ice accumulation on the unprotected surfaces are to be decreased by 10 %.
Cruise speeds may be decreased by 10 %, if cruise power is not changed, or more, if cruise power setting should be
decreased due to the additional inertial separator limitations (ITT limitation).
Because of the higher landing speed, landing distances will be increased. In the landing configuration, using
90 KIAS approach speed increases landing distance by 20 % - refer to Chapter 5.14 ”LANDING DISTANCES”.
