PPRuNe Forums - View Single Post - Cold temperature corrections on LNAV/VNAV minima
Old 14th December 2015 | 11:13
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sonicbum
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From: Having a margarita on the beach
Originally Posted by longobard
Hey guys,

I cannot really come to an end weather it's necessary or not to apply cold temperature corrections to minimum altitudes when performing RNAV GNSS apch using LNAV VNAV minima on A320/330.

What's your or your operator idea?

Txs for sharing.
That you are not allowed to modify the procedure except for speed constraints. RNAV Approaches to LNAV/VNAV minima usually specify a minimum temperature in order to apply said minima, if no temperature is reported than we take 0 deg as a reference temperature. In all other conditions (temperature below the minimum specified for the procedure) we revert to LNAV minima and yes we start applying temperature corrections for the different characteristic altitudes (FCOM-PER-OPD).
Hope it makes sense.
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