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737 Captain >> 737 Captain - General >> B737-200 FMC GPS???
https://www.captainsim.org/forum/csf.pl?num=1516899389

Message started by Capbat on Jan 25th, 2018 at 4:56pm

Title: Re: B737-200 FMC GPS???
Post by Markoz on Jan 27th, 2018 at 12:16am

Capbat wrote on Jan 26th, 2018 at 5:02pm:
I also have Flight Sim Commander 9.6 which is updated by Navigraph. But I am not sure this would work with the 737 GPS, because this GPS is not updated with latest real world Data. When you say 'nav mode' you mean in the B737 autopilot portion do you?

When the route by FSC 9.x is saved, all the waypoints are a series of lattitude and langitude coordinates, and the GPS in the 737 uses them to tell it where the next waypoint is located, so it will track the route fine. This happens regardless of whether you use the default FSX Flight Planner, or a different program, like FSC9.x, to create the route.

EBONY waypoint used in a flight plan created by FSC9.7:

        <ATCWaypoint id="EBONY">
            <ATCWaypointType>Intersection</ATCWaypointType>
            <WorldPosition>S36° 10' 56.00",E147° 4' 14.00",+000000.00</WorldPosition>
            <ICAO>
                <ICAORegion>KK</ICAORegion>
                <ICAOIdent>EBONY</ICAOIdent>
            </ICAO>
        </ATCWaypoint>

EBONY in a flight plan created by the default FSX Flight Planner:

        <ATCWaypoint id="EBONY">
            <ATCWaypointType>Intersection</ATCWaypointType>
            <WorldPosition>S36° 10' 56.99",E147° 4' 14.00",+000000.00</WorldPosition>
            <ICAO>
                <ICAORegion>YM</ICAORegion>
                <ICAOIdent>EBONY</ICAOIdent>
            </ICAO>
        </ATCWaypoint>

As you can see, they both have slightly different coordinates (if I'm not mistaken, the coordinates are listed in DEGREES, MINUTES, and 100ths OF A MINUTE(?)), and there is 99 100ths of a minute (almost one minute) the difference, so the 737 will fly from the previous waypoints coordinates, to the coordinates of EBONY as shown in the .PLN file. The GPS doesn't care about the name of the fix/waypoint, only its coordinates.

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