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Type IV fluid on top of the existing film. If the
holdover time is exceeded, surfaces must first be
deiced with a mixture of hot water and deicing
fluid, before another application of Type II or Type
IV fluid is made.
2. Type II, III and IV fluid must never be applied to
the windshields and side windows.
3. Application of deicing/anti-icing fluid on wheel
brake assemblies will seriously degrade braking
performance.
4. With the APU operating, ingestion of deicing fluid
will contaminate the air-conditioning system, and
cause objectionable fumes (causing throat
irritation) and odours to enter the airplane. This
may also cause erratic operation and possible
damage to the APU.
5. Under no circumstances should spray be directed
at the trailing edges of control surfaces. Such
spray may force partially melted contamination
into hinge mechanisms, and under control
shrouds, with risk of later re-freezing.
(1) Fluid..................................................................................APPLY
in the following sequence:
• Horizontal stabilizer
• Vertical stabilizer
• Top of fuselage
• Sides of fuselage
• Wings.
After Deicing/Anti-icing Spraying:
(2) Deicing .........................................................................INSPECT
areas listed below, to confirm complete deicing:
• Wings – leading edges, upper and lower surfaces;
• Upper fuselage;
• Vertical and horizontal stabilizers – leading edges,
upper/lower surfaces and side panels;
• Flaps, flap tracks and flap drives;
• Ailerons, elevators, rudder and spoilers;
• Air data probes/sensors, AOA vanes;
• Antennas;
• Fuel drains and NACA vent scoops;
• Engine and APU intakes; APU exhaust;
• Landing gear and landing gear bays;
• Windshield, windows; door sills and surrounds.
SUPP-01-2
REV 69, Jun 04/07
QUICK REFERENCE HANDBOOK
PSP 604-15 COLD WX OPS
DEICING/ANTI-ICING
If engines/APU are operating:
(3) Thrust .............................................................................. 60% N1
for 20 seconds.
(4) 14TH STAGE bleeds...........................................AS REQUIRED
(5) WING and COWL ANTI-ICE ...............................AS REQUIRED
(6) 10TH STAGE bleeds......................................................... OPEN
(7) PACKs.................................................................................... ON
(8) Take-off configuration.................................................RECHECK
SUPP-01-3
REV 69, Jun 04/07
QUICK REFERENCE HANDBOOK
PSP 604-15 COLD WX OPS
DEICING FLUID HOLDOVER TIME
CAUTION
1. For all types of deicing fluid, the time of protection
will be shortened in heavy weather conditions,
heavy precipitation rates or high moisture content.
High wind velocity or jet blast may reduce
holdover time below the lowest time stated in the
range. Holdover time may also be reduced when
airplane skin temperature is lower than OAT. The
only acceptable decision criteria is the shortest
time within the applicable holdover timetable.
2. Deicing/anti-icing fluids have not been tested for
ice pellet precipitation, and all holdover tables do
not address ice pellet precipitation.
3. When ice pellet precipitation occurs after the
application of deicing/anti-icing fluid, the
deicing/anti-icing fluid dilutes, which results in
rapid wing contamination.
4. Fluids used during ground deicing are not
intended for, and do not provide, ice protection
during flight.
SUPP-01-4
REV 69, Jun 04/07
QUICK REFERENCE HANDBOOK
PSP 604-15 COLD WX OPS
DEICING FLUID HOLDOVER TIME
QR1_DX_007
Type I Fluids
Table 1
SUPP-01-5
REV 69, Jun 04/07
QUICK REFERENCE HANDBOOK
PSP 604-15 COLD WX OPS
DEICING FLUID HOLDOVER TIME
QR1_DX_008A
[4]
[4]
[4]
[4]
[4]
[4]
Type II Fluids
Table 2
SUPP-01-6
REV 74, Nov 07/08
QUICK REFERENCE HANDBOOK
PSP 604-15 COLD WX OPS
DEICING FLUID HOLDOVER TIME
QR1_DX_009
Type III Fluids
Table 3
SUPP-01-7
REV 69, Jun 04/07
QUICK REFERENCE HANDBOOK
PSP 604-15 COLD WX OPS
DEICING FLUID HOLDOVER TIME
QR1_DX_010a
[4]
[1] During conditions that apply to aircraft protection when frost is forming constantly.
[4]
[4]
[4]
[4]
[4]
Type IV Fluids
Table 4
SUPP-01-8
REV 74, Nov 07/08
QUICK REFERENCE HANDBOOK
　
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