ICAO Standarts ?
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Join Date: Feb 2005
Location: Florida
Age: 41
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ICAO Standarts ?
Why is it, that METARs, TAFs and other text weather is written somewhat differently between the different countries regardsles of FAR, JAR etc. - I thought ICAO was supposed to enforce a so to speak "common language" in aviation around the world.
For instance, I wonder why most countries under FAA use millibars of mercury as altimeter settings and still they messure sea level pressure in millibars, which in my book is the same as hecto pascal - frequently used throughout most of Europe as QNH settings. Why is it, that we have to learn all different sizes, messurements and so forth, and still not have the same weather system?
For instance, I wonder why most countries under FAA use millibars of mercury as altimeter settings and still they messure sea level pressure in millibars, which in my book is the same as hecto pascal - frequently used throughout most of Europe as QNH settings. Why is it, that we have to learn all different sizes, messurements and so forth, and still not have the same weather system?
ICAO are not an enforcement agency. They issue Standards and Recommended Practices (SARPs) that are expected to be adopted by member States, but the same member States may also file differences from those SARPs if they wish.
The USA is probably the most non-compliant member State.
The USA is probably the most non-compliant member State.
