Hi JammedStab,
But I want official government publication info
Will Jeppesen do?
http://www.jeppesen.com/download/bri...en00-arnav.pdf See Page 8
"
Cold Temperature Limitations. Considering the pronounced effect of nonstandard temperature on BARO-VNAV operations, a minimum temperature limitation will be published for each procedure for which BARO-VNAV operations are eligible.
This temperature represents the airport temperature below which use of the BAROVNAV will not be authorized to the LNAV/VNAV minimums."