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Old 15th April 2013 | 12:09
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Joined: Aug 1998
: ATPL
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From: Ex-pat Aussie in the UK
Yes - that's how map shift occurs, generally. You fly in IRS for a couple of hours, then come into range of a VOR/DME or paired DMEs or whatever - the aircraft recalculates it's position and shifts the map under you (as it moves the aircraft symbol to the new, updated, position).

It was quite common before GPS, flying in remote areas like Australia.
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