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The protection time will be shortened in severe weather conditions. Heavy precipitation rates or high moisture content, high wind velocity and jet blast may cause a degradation of the protective film. If these conditions occur, the protection time may be shortened considerably. This is also the case when the aircraft skin temperature is significantly lower than the outside air temperature.
The indicated times should, therefore, only be used in conjunction with a pre-takeoff check.
All de/anti-icing fluids following the specifications mentioned below are approved for all Airbus aircraft:
.
Type I : SAE AMS 1424 standard

.
Type II : SAE AMS 1428 standard

.
Type IV : SAE AMS 1428C standard

The list of approved fluids is given in AMM 12.31
Table 1 Guidelines for holdover times anticipated for SAE Type I fluid mixture as a function of weather conditions and OAT CAUTION: This table is for use in departure planning only, and it should be used in conjunction with pre-takeoff check procedures.
OAT  Approximate holdover times under various weather conditions (hours: minutes) 
°C  °F  Frost (*)  Freezing Fog  Snow  Freezing Drizzle (**)  Light Freezing Rain  Rain on Cold Soaked Wing  Others (1) 
above 0  above 32  0:45  0:12-0:30  0:06-0:15  0:05-0:08  0:02-0:05  0:02-0:05  CAUTION: No holdover time guidelines exist 
0 to -10  32 to 14  0:45  0:06-0:15  0:06-0:15  0:05-0:08  0:02-0:05  CAUTION: Clear ice may require touch for confirmation 
below -10  below 14  0:45  0:06-0:15  0:06-0:15 

°C: Degrees Celsius - °F: Degrees Fahrenheit - OAT: Outside Air Temperature
THE RESPONSIBILITY FOR THE APPLICATION OF THESE DATA REMAINS WITH THE USER.
(*) During conditions that apply to aircraft protection for ACTIVE FROST (See General notes hereafter)
(**) Use light freezing rain holdover times if positive identification of freezing drizzle is not possible.
(1) (See General notes hereafter)
Snow pellets, snow grains, ice pellets, moderate and heavy freezing rain, hail
SAE Type I fluid/water mixture is selected so that the freezing point of the mixture is at least 10(C (18(F) below OAT

CAUTION: The time of protection will be shortened in heavy weather conditions. Heavy precipitation rates or high moisture content, high wind
velocity or jet blast will reduce holdover time below the lowest time stated in the range. Holdover time may be reduced when aircraft skin
temperature is lower than OAT.
CAUTION: SAE Type I fluid used during ground de-icing/anti-icing is not intended for and does not provide protection during flight.

Effective: October 1, 1999
Table 2 Guidelines for holdover times anticipated for SAE Type II fluid mixtures as a function of weather conditions and OAT CAUTION: This table is for use in departure planning only, and it should be used in conjunction with pre-takeoff check procedures.
　
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