Narrative:

After takeoff at pit new WX for dfw had changed from forecast VFR to CAT III minimums. Planned arrival with no alternate and little extra fuel. On arrival dfw aircraft's ILS not working properly, so diverted okc. Have had several diversions recently because of totally incorrect WX forecast. Seems forecast WX not very dependable. This combined with minimum ramp arrival fuel program and even small equipment problems can lead to an unsafe operation. It also seems that dispatch is very slow to inform the crews of these changing conditions and the crew is on their own in checking WX, finding alternates, etc. This can be difficult if ACARS is inoperative.

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Original NASA ASRS Text

Title: S80 FLC DIVERSION TO ALTNERATE WHEN DEST ARPT WX CHANGES FOR THE WORST. ACFT NOT CAPABLE OF APCH ACCOUNT ACFT EQUIP PROB AND FUEL REMAINING IS TOO LOW.

Narrative: AFTER TKOF AT PIT NEW WX FOR DFW HAD CHANGED FROM FORECAST VFR TO CAT III MINIMUMS. PLANNED ARR WITH NO ALTERNATE AND LITTLE EXTRA FUEL. ON ARR DFW ACFT'S ILS NOT WORKING PROPERLY, SO DIVERTED OKC. HAVE HAD SEVERAL DIVERSIONS RECENTLY BECAUSE OF TOTALLY INCORRECT WX FORECAST. SEEMS FORECAST WX NOT VERY DEPENDABLE. THIS COMBINED WITH MINIMUM RAMP ARR FUEL PROGRAM AND EVEN SMALL EQUIP PROBS CAN LEAD TO AN UNSAFE OP. IT ALSO SEEMS THAT DISPATCH IS VERY SLOW TO INFORM THE CREWS OF THESE CHANGING CONDITIONS AND THE CREW IS ON THEIR OWN IN CHKING WX, FINDING ALTERNATES, ETC. THIS CAN BE DIFFICULT IF ACARS IS INOP.

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.