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Vertical guidance by FSCommander in FSX

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Hello,

I run FS Commander 8.4 under Vista (64 bit) with FSX (AccPack). Yesterday I generated a flight plan in FSC and saved it as FSX standard *.pln file as well as PMDG's *.rte file. Afterwards I started FSX, boarded my PMDG 747X and imported the flight plan into the FMC via "Co route".

Lateral navigation was running ok but no vertical data were transferred into the FMC. My flight plan sent me to the destination with 0.8 mach and FL310 above the arrival runway. What did I do wrong to achieve a fully FMC computement of my FSC plan?

And btw: in FSC (running on a second monitor) the moving map display (aircraft on route line) was acting correctly but the legs (box at the top of the FSC window) did not follow the real aircraft (i.e. the passed legs were not populated with data like ATA, fuel etc. and there was no FSC chime sound when having passed the next waypoint).

Thanks so much for a hint how I could do a correct flight planning the next time.

Christian

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Hi Christian,

Lateral navigation was running ok but no vertical data were transferred into the FMC. My flight plan sent me to the destination with 0.8 mach and FL310 above the arrival runway. What did I do wrong to achieve a fully FMC computement of my FSC plan?

The autopilot does not control altitude or landing, but only heading according to the flight plan.

Both altitude and landing are the responsibility of the pilot or ATC.

And btw: in FSC (running on a second monitor) the moving map display (aircraft on route line) was acting correctly but the legs (box at the top of the FSC window) did not follow the real aircraft (i.e. the passed legs were not populated with data like ATA, fuel etc. and there was no FSC chime sound when having passed the next waypoint).

The automatic switching of a waypoint is depending of the Type and speed of the aircraft and also depending of the angle to the next waypoint.

If this value out of range (no chime) then you have to switch manually to the next waypoint by using the arrow button.

Regards,

Volker

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Hello Volker,

thanks for your statements. Only to have it clear: I'm not talking of FSX standard autopilot. I imported my FSC flightplan into the FMC of my PMDG 747X. Shouldn't there be vertical guidance computed by the FMC involving all FSC flight data? (At least there is when entering the route manually...) Or what is it good for to import a *.rte file into the PMDG's FMC if it could only be followed laterally by the autopilot?

Hmmm, concerning the automatic switching of a waypoint and the chime: there were no problematic angles in my route with angles to narrow or speeds to high. I don't think that this was a reason... But I'll check it with a route straight ahead...

Christian

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Hi Christian,

As is explained at several places in our manual, when you use an FMC-integrated aircraft such as the PMDG planes, the FS-internal autopilot and thus the FS Commander autopilot are suspended, i.e. they are inactive. The entire aircraft path, vertical, horizontal, climb rate, etc., is exclusively controlled by the FMC. It is fairly obvious why the PMDG people decided to deactivate the FS-internal autopilot. Suppose, the FMC tells the aircraft to make a right turn and the FS-internal autopilot tells the aircraft to make a left turn (to take an extreme case), what should the poor aircraft then do?

When you load an FS Commander-generated flight plan into the FMC, then basically only the waypoints are sent to the FMC, because everything else is being calculated and controlled by the FMC itself. Of course, this presupposes that you know how to operate the FMC properly. So basically no problem arises, when you use the FMC properly.

Regards

Sascha

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Sascha and Volker,

thank you so much for your appreciated and helpful input. Although I read it in the manual I perhaps misinterpreted thie information given there. Yet I now fully understand the logic behind FSX autopilot working with FSC and FMC's of addon aircrafts working with FSC.

I somehow managed it now - even the chime sounds and the waypoint table is being filled with data concerning ATA, GS, Altitude and Fuel. Seems I have been a fool when programming my FMC yesterday. Perhaps I left something out that screw up the process. All FSC data are being processed perfectly now in PMDG FMC and I'm happy.

Thanks again for getting me back on track.

Cheers

Christian

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