How do you clear all data from an FMC

I have noticed whenever I load a flight plan when a different one was previously loaded (and not flown) that data such as altitude and airspeed seem to get mucked up at some waypoints with my FMC. In fact recently when I added changed the SID in my flight plan (using FlightSim Commander), saving the flightplan and then loading it into FSX that the altitude at one waypoint (might have been the last waypoint for the SID) was set to something too low.

Maybe I should have entered the cruise altitude again (although not changed) and then clicked on CALC VNAV again.

OR should I have cleared the previously entered flight plan from the FMC first? If so how do you do that?

Thanks

In theory, you simply delete the origin and all the entered data goes away - simply entering a modified plan doesn't do it in all cases. In practice, it depends on who wrote the FMC you are using. A good, living, pilot always looks and confirms that the FMC is doing what you want.

DJ

Thanks DJ

Thanks for the advice which I will check out tomorrow.

I am using the Friendly Panels FMC.

Yes I should have checked each waypoint before I departed as I usually do and make subtle changes to calculated airspeed and altitude but felt under pressure from the atc (in a multiplayer session) as he questioned the first waypoint in the flightplan I had submitted as he did not know where it was (I had used FSC to create a flight plan). He was closing his session in a few minutes.

I hurriedly added a SID to the flightplan in FSC, saved and then loaded into FSX.

In theory, you simply delete the origin and all the entered data goes away - simply entering a modified plan doesn't do it in all cases. In practice, it depends on who wrote the FMC you are using. A good, living, pilot always looks and confirms that the FMC is doing what you want.

 

DJ

yeah its very simple.. be a good pilot :)

Thanks Camryn64

I must try not to be a naughty pilot in the future. In retrospect even though I was being pressured into submitting a flight plan which had waypoints the multiplayer atc guy knew and then getting into the air (as he was about to exit the game) I should have checked my waypoint altitudes etc once I got in the air.

BTW The Friendly Panels FMC doesn't seem to allow the origin or destination to be cleared (which you say will clear the FMC of all data). I have tried selecting them and clicking on the CLR button as well as press the backspace key (after reading the user guide). There was nothing at Youtube.

I then experimented and after loading a flight plan and then loading a different one I then entered my cruising altitude and clicked on CALC VNAV and everything seemed to work ok.

Most, if not all, third party add-on fmc's are not implemented properly. Those from Ernie Alston probably come closest - take a look at http://isgsim.com/ .

DJ

Thanks DJ for the advice.

I am a very amateurish 'pilot' who doesn't fly a lot (usually only when I can find a multiplayer session which has someone doing the atc and most are running 10 hours different to my local time so hard to locate) and so would rather fork out Euro 21 for something else.

I just found that I also have the JB Panels FMC/CDU and so will have a look at that one which has some 'rave' reviews' and is free.

Maybe one day I will learn how to set the FMC/CDU for takeoff power settings etc etc.

John

It appears the Friendly Panels FMC is tied to the flight plan of FS.

BTW, is that a good FMC? I'm looking for one to add to the Lear 45.

Yes the Friendly Panels FMC is tied to the flight plan of FS although you can manually load data into it.

Not sure if it is a good one but it does everything I want although I'm only using it to program headings and altitudes at each waypoint (I haven't tried to see if you can enter fuel loads, V1, V@ etc).

Have a look at

Also

I have no problems now with previously entered flight plans.

Thanks