But, back to the original purpose of this.
What software version is the L-Nav? Does it have a temperature probe,
g-meter, etc?
Which size vario display? 2.25 or 3.125?
Providing a program with the 1550? GNII maybe? Or, just the 1550.
Recent calibrations on the GPS Nav or L-Nav?
Software version in the GPS Nav? Display version?

Steve Leonard