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What is the function of freeze on MCDU in A320

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What is the function of freeze on MCDU in A320

Old 3rd May 2023, 14:02
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What is the function of freeze on MCDU in A320

thx!freeze the irs position for?
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Old 4th May 2023, 09:10
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You can use it to plot your position as a gross error check on oceanic routes.
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Old 4th May 2023, 11:17
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Is that mean if I press the freeze*,the MCDU will create a fix that use as a VOR?
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Old 4th May 2023, 15:51
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It just means that when you press freeze, a snapshot of the current LAT/LONG is taken.
You can then use this position to make a plot on a chart.

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Old 5th May 2023, 02:43
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Thank you for reply.
I can only find the info on FCOM said that
If there is a discrepancy between the raw data position and the FM position:
PRESS the DATA key on the MCDU.
SELECT the POSITION MONITOR page.
SELECT “FREEZE”.
On the other MCDU: Select the GPS MONITOR page.

But when you found the discrepancy situation then press the freeze*. Is that will get the wrong positon?
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