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GPS and non- WGS-84 co-ordinates.

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GPS and non- WGS-84 co-ordinates.

Old 30th Aug 2002, 07:50
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GPS and non- WGS-84 co-ordinates.


There is a note in the A318/319/320/321 FCOM 4.05.30, stating that we should deselect GPS as a navigation source for takeoff when operating from airports where there is a difference between the local co-ordinate system and WGS-84, to avoid a possible map shift on application of take-off thrust. Did you ever come across this situation and what airports/countries are affected. Jeppesen has a table (updated Oct 01) for compliant countries at http://socrates.jeppesen.com/onlinepubs/wgs-84.phtml


Any ideas?
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Old 30th Aug 2002, 14:29
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I ts in all the FCOM's, mainly there due to regulatary pressures.
Never given me any problems anywhere in the world but to be remembered and acted on if necessary.
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