"Jack" wrote in message
link.net...
I have been trying to figure out what is happening with my Cambridge
LNAV since in several flights "speed-to-fly" bars have never appeared,
even in a long continuous glide straight at the goal indicated by the
connected Cambridge GPS.

Regards the Climb/Cruise switch that you have been advised about:
If the switch is in the "Cruise" mode the Speed to Fly bars should always be
in view.
If the switch is in the "Climb" mode the Speed to Fly bars should come into
view when flying at a speed greater than about 60 kts.

If you never see the Speed to Fly bars then you may have an electronic
failure. In that case you will get to run a test as to whether Cambridge
really will still do repairs.

Duane