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Aerodrome Temp .C  Height above the elevation of the altimeter setting source (feet) 
60  90  120  150  180  210  240  270  300  450  600  900  1,200  1,500 
0 / +32  0  5  5  5  5  10  10  10  10  20  25  35  50  60 
-10 / +14  5  5  10  10  15  15  20  20  25  35  50  70  95  120 
-20 / -4  5  10  15  20  20  25  30  35  35  55  75  110  150  185 
-30 / -22  10  15  20  25  30  35  40  45  50  75  100  155  205  255 
-40 / -40  15  20  25  35  40  45  50  60  65  100  130  200  265  335 
-50 / -58  15  25  35  40  50  55  65  75  80  125  165  250  330  415 

 

SAE TYPE I DEICING FLUID APPLICATION PROCEDURES
Guidelines for the application of SAE Type I fluid mixtures at minimum concentrations for the prevailing outside air temperature (OAT)
Outside Air Temperature (OAT)  One-Step Procedure Deicing/Anti-icing  Two-Step Procedure 
First Step : Deicing  Second Step Anti-icing1 
-3.C(27.F) and above  Heated mix of fluid and water with a  Heated water or a heated mix of fluid and water  Heated mix of fluid and water with a freezing point of at least 10.C (18.F) below OAT 
Below -3.C (27.F)  freezing point of at least 10.C (18.F) below OAT  Freezing point of heated fluid mixture shall not be more than 3.C (5.F) above OAT 

1 To be applied before first step fluid freezes, typically within 3 minutes.
NOTES
.  
Temperature of water or fluid/water mixtures shall be at least 60.C (140.F) at the nozzle. Upper temperature limit shall not exceed fluid and aircraft manufacturers’ recommendations.

.  
To use Type I holdover time guidelines in snow conditions, at least 1 litre/m2 (~2 gal./100 sq.ft.) must be applied to the deiced surfaces.

.  
This table is applicable for the use of Type I Holdover Time Guidelines.  If holdover times are not required, a temperature of 60.C (140.F) at the nozzle is desirable.

CAUTION
.  Wing skin temperatures may differ in some cases may be lower than outside air temperatures; a stronger mix (more glycol) may be needed under these conditions.

APPENDIX “D”
SAE TYPE II, Type III and Type IV ANTI-ICING FLUID APPLICATION PROCEDURES
Guidelines for the application of SAE Type II, III and IV fluid mixtures 
(minimum concentrations in % by volume) as a function of outside air temperature
　
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