Originally Posted by
Chopstyx
I am not familiar with the B777 autopilot. I gathered there was only an L-Nav choice between navigating between waypoints and magnetic headings?
I assume if there was an autopilot selection which allowed such a track then perhaps yes, but is that a track which also requires the input of a destination waypoint?
Is that an option available for any flight regime, or just FANS 1/A routes?
If the answer is FANS 1/A routes then it implies the input of a destination co-ordinate.
If you are correct then it still leaves unanswered the question how is such a Great Circle route reconciled with the BOF chart when it involves steady velocity away from INMARSAT after 19:41 UTC?
I have tried to find the relevant post, still looking.
As I remember it the autopilot can fly LNAV (preprogrammed route), Heading Select or Track Select. The heading/track reference can also be changed from magnetic to true (as done over the North Atlantic). So I would imagine a true track could be flown with no end point entered into the computer.