CAUTIONS
.
The only acceptable decision criterion, for takeoff without a pre-takeoff contamination inspection, is the shorter time within the applicable holdover time table cell.
.
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.
.
Holdover time may be reduced when aircraft skin temperature is lower than outside air temperature.
.
Fluids used during ground deicing/anti-icing do not provide in-flight icing protection.
D
E
-
I
C
I
N
G
/
A
N
T
I
-
I
C
I
N
G
M
A
N
U
A
L
Appendix “F”
TABLE 4 -Generic
SAE TYPE IV FLUID HOLDOVER GUIDELINES FOR WINTER 2008-20091
THE RESPONSIBILITY FOR THE APPLICATION OF THESE DATA REMAINS WITH THE USER
NOTES :
1 Based on the lowest holdover times of the Type IV fluids listed in Table 9.
2 Heavy snow, snow pellets, ice pellets, moderate and heavy freezing rain, and hail.
3 These holdover times only apply to outside air temperatures to -10.C (14.F) under freezing drizzle and light freezing rain.
4 Use light freezing rain holdover times if positive identification of freezing drizzle is not possible.
5 Radiational cooling during active frost conditions may reduce holdover times when operating close to the lower end of the outside air temperature range.
6 Ensure that the lowest operational use temperature (LOUT) is respected.
CAUTIONS
.
The only acceptable decision criterion, for takeoff without a pre-takeoff contamination inspection, is the shorter time within the applicable holdover time table cell.
.
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.
.
Holdover time may be reduced when aircraft skin temperature is lower than outside air temperature.
.
Fluids used during ground deicing/anti-icing do not provide in-flight icing protection.
D
E
-
I
C
I
N
G
/
A
N
T
I
-
I
C
I
N
G
M
A
N
U
A
L
Appendix “F”
TABLE 4 – D-E106
DOW CHEMICAL TYPE IV FLUID HOLDOVER GUIDELINES FOR WINTER 2008-20091
UCARTM ENDURANCE EG 106
THE RESPONSIBILITY FOR THE APPLICATION OF THESE DATA REMAINS WITH THE USER
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