Narrative:

The departure ATIS was calling light freezing drizzle. The temperature was 34 degrees F, however, no precipitation was observed. During preflight walk-around, the aircraft was clear of ice and no precipitation of any sort was noted. Because of ATIS (light freezing drizzle), we decided to apply type I fluid as a precaution and since there was no precipitation, a holdover time was not required and type ii fluid was not necessary. Recently, I hear the FAA is looking into aircraft taking off during freezing rain with only type 1 fluid. ATIS was not current with the conditions and in my judgement we used extreme caution.

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Original NASA ASRS Text

Title: WRONG DE-ICING FLUID FOR THE RPTED CONDITIONS.

Narrative: THE DEP ATIS WAS CALLING LIGHT FREEZING DRIZZLE. THE TEMP WAS 34 DEGS F, HOWEVER, NO PRECIPITATION WAS OBSERVED. DURING PREFLT WALK-AROUND, THE ACFT WAS CLR OF ICE AND NO PRECIPITATION OF ANY SORT WAS NOTED. BECAUSE OF ATIS (LIGHT FREEZING DRIZZLE), WE DECIDED TO APPLY TYPE I FLUID AS A PRECAUTION AND SINCE THERE WAS NO PRECIPITATION, A HOLDOVER TIME WAS NOT REQUIRED AND TYPE II FLUID WAS NOT NECESSARY. RECENTLY, I HEAR THE FAA IS LOOKING INTO ACFT TAKING OFF DURING FREEZING RAIN WITH ONLY TYPE 1 FLUID. ATIS WAS NOT CURRENT WITH THE CONDITIONS AND IN MY JUDGEMENT WE USED EXTREME CAUTION.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.