PPRuNe Forums - QNH CHANGES WHEN?

PPRuNe Forums (https://www.pprune.org/)

- Tech Log (https://www.pprune.org/tech-log-15/)

- - QNH CHANGES WHEN? (https://www.pprune.org/tech-log/10586-qnh-changes-when.html)

a319320

18th October 2001 13:55

QNH CHANGES WHEN?

I had to do a ferry the other day and we were
below the transition altitude all the way.
I'm not sure when one changes from departure
QNH to area and then destination QNH,could
someone enlighten me please?
Thanks

wysiwyg

18th October 2001 14:40

If staying below transition:

within/below TMA - terminal area QNH
clear of TMA/en route - regional pressure setting
back within/below TMA - terminal area QNH again

regards
wizzy

a319320

18th October 2001 15:37

thanks wysiwyg!

A Very Civil Pilot

18th October 2001 17:32

If you're aerodrome wasn't under a TMA, aerodrome QNH is valid for a radius of 25nm. (obviously more relevant for the GA end of the market).

All times are GMT. The time now is 08:37.