<![CDATA[Problem switching between AP Source between NAV and RNAV]]>I've been flying the 114 without GPS using the MX-170Bs and the RNAV511 but I keep running into a problem where the AP Source doesn't change when I press the NAV/GPS button on the MD41.

It seems to work initially but at some point something seems to happen that leaves it stuck unable to switch between NAV and RNAV.

Does anyine have any ideas what might be happening and so how to fix or avoid it ?

]]>https://community.justflight.com/topic/11339/problem-switching-between-ap-source-between-nav-and-rnavRSS for NodeFri, 11 Sep 2026 08:17:41 GMTThu, 10 Sep 2026 18:36:16 GMT60