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Thread: What is the difference in equipment used to generate an ATIS, AWIS and METAR?
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Old 2nd May 2014, 04:38
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LongLats
 
Join Date: Aug 2012
Location: NZ
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Automets can't be used at all for 'actual' QNh. There is no problem using them for forecast QNH minima.
So the METAR QNH meets the requirement of point b. in AIP ENR 1.5-33 5.3.1, "b. the forecast terminal QNH"?

Also, I'm not sure what you mean by an automet. But an AWIS is automatically generated and that is absolutely a source of actual QNH where 100ft can be taken off the minima.
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