Hi Everyone,

I have a similar problem except everything is going on correctly except the L NAV/V NAV buttons refuse to light up. I can actually get the heading to work but I cannot fly my desired course. I am setting the IRS (first aligning it by switching the knobs to align...waiting for lights to go out...and turn to it to the NAV switches. If anyone knows anything I am doing wrong that is preventing the L NAV/ V NAV buttons to light up, please comment.

Thank you