B60Duke

Thanks, but it doesn't matter.

This is my home airport where I work, I can assure you both elevations would be considered correct, it is a very large airfield and depending on what end you are at there will be a few feet difference. I suppose it doesn't matter anyway if only the tiny standby altimeter is reading field elevation and the main is reading 0.

Thanks Vaughan Yes the aircraft is the problem, this is why I am asking why and how to fix. Nobody has a clue and the developer does not offer any support. This is the only aircraft that has this issue.

Hi Peter Thanks, but I did not re-post it, I double posted it by accident and could not find a way to delete one of them.

Hi Why does the field elevation in the backup altimeter read correct at CYYC at 3560' when the altimeter set "B" key is used, but shows incorrect in both main altimeters at 0'? Sim Federation Challenger 350 (Sim Market) MSFS 2020. https://imgur.com/a/U8PV3Gm

Hi Why does the field elevation in the backup altimeter read correct at CYYC at 3560' when the altimeter set "B" key is used, but shows incorrect in both main altimeters at 0'? Sim Federation Challenger 350 (Sim Market) MSFS 2020. https://imgur.com/a/U8PV3Gm Altimeter

Ok, I have just discovered that it is the VRinsight software for my Mpanel that is overriding control of the cockpit nav audio. If I take Mpanel out of the equation the cockpit nav audio operates as advertised lol

Hey Guys Thanks for all your replies and suggestions, I have exhausted them all, all the nav buttons are out and off on all three radios, the CTRL+4 or nav1 ident are not assigned in FSX. I can turn it off and on with any other aircraft I have tried, just not this one. Maybe I will uninstall and reinstall this aircraft? Doug

Thanks FDX777, I guess that means you don't know how either ? Lol

Hi Guys/Gals How do I turn off the nav ident audio on this 737NGX? lol Doogles