sonicbum
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- Join DateMar 2012
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Quote:
Just follow the tropopause.Originally Posted by RMC
Is this only applicable to contingencies in the Northern Hemisphere (South ascend North descend - SAND) Should we descend towards the South pole in the Southern Hemisphere?
Gets higher towards the equator and lower towards the poles -> climb if turning towards the equator, descend if turning towards the poles.
I'm guessing... garbled acceleration errors on a direct reading compass? see PPRuNe
Deviations from track when in the North Atlantic Track System?
https://skybrary.aero/articles/north...ns-contingency
https://skybrary.aero/articles/north...ns-contingency
sonicbum
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Quote:
The ICAO weather deviation procedure is for all worldwide oceanic airspace not just NAT HLA.
No, it does not indeed but we are all very much aware that this -like many others- is just a mnemonic rule of thumb which could, by the way, become unusable tomorrow morning if procedures change even in the Northern Hemisphere. No need to get excited, people still look at their contingencies for different airspaces before thinking about acronyms. Originally Posted by Rusty1
Because it does not work in the Southern Hemisphere nor South of the equator.The ICAO weather deviation procedure is for all worldwide oceanic airspace not just NAT HLA.




