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Forum: Middle East

25th Sep 2017, 16:35

Replies: 137

Emirates A388 - Moscow UUDD, GA from 400 feet AGL, 8nm out.

Views: 146,799

Posted By ATC Watcher

Then I stand corrected. I was in an ICAO...

Then I stand corrected.

I was in an ICAO meeting in the early 1990's where all this was explained, the earth being a " potatoid" (I remember that term !) therefore every major State used a...

Forum: Middle East

24th Sep 2017, 07:38

Replies: 137

Emirates A388 - Moscow UUDD, GA from 400 feet AGL, 8nm out.

Views: 146,799

Posted By ATC Watcher

India 4 2 : Don't be fool by the name ,...

India 4 2 :
Don't be fool by the name , marketing , it is a US DoD baby, developed by them for their GPS , derived from WGS60, itself from an earlier one started when they launched satellites in...

Forum: Middle East

24th Sep 2017, 04:37

Replies: 137

Emirates A388 - Moscow UUDD, GA from 400 feet AGL, 8nm out.

Views: 146,799

Posted By ATC Watcher

GPS altitude : will not work below 3000 ft...

GPS altitude : will not work below 3000 ft because the earth is not a perfect circle . Your C152 will find itself 1000ft below the ground in some places..
As said before WGS84 is an North American...

Forum: Middle East

18th Sep 2017, 16:39

Replies: 137

Emirates A388 - Moscow UUDD, GA from 400 feet AGL, 8nm out.

Views: 146,799

Posted By ATC Watcher

Well it is standardized , it is the metric...

Well it is standardized , it is the metric system . Problem is after having voted for it in 1945 at the ICAO foundation , the US subsequently refused to apply and since the vast majority of the...

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