Simviation Forums

OK so i am using the Honeywell easy FMC by Garret someone, and every time I create a flight plan in FSX and start the flight I have to change the air speeds in the FMC from ground speed to IAS. It seems that the FSX flight planner uses ground speeds when generating the flight plan, and of course we dont flight on the ground so my plan wants to do 400+ at FL350. in order to fix this I have to manual change each entry in the FMC. I cant even leave one blank after setting speed on previous way-point cause the AP auto throttles to the next value and it will cut engine power.

Am I doing something wrong? I mean is their anyway to have the FSX flight planner use IAS instead of GS when generating the flight plan?

Its a real pain in the butt to have to change 5 pages of way-point speeds for one flight every time I want to fly with the FMC.

Now I know their are some purist out there that say this is how it is, and i respect that but sometimes I would like to just fly a route without having to change speed values all the time.

IS their a solution to this maybe an online planner that uses IAS instead of GS or some thing? Can someone help me out please?

I usually have to do the same thing... If im going to make a long flight, I will only change the first few entries, and leave the rest.. Until i get to altitude.. Then i will see if the prescribed 477 speed setting will be ok at altitude.. if not then I can go and adjust all the speeds manually... And yes it does suck when you have 5 pages of waypoints.

So their is no fix for this? Have you seen any online flight planners that use IAS instead of GS?

I thought maybe their was a way to trick FSX to use IAS instead of GS maybe altering the FSX.cfg file. Wishful thinking I guess.

Hi,

I found that the FMC appears to use the Aircraft Config File, [Reference Speeds], "cruise speed" value when at the planned flight level.

This results in overspeed condition.

My solution was to change the "cruise speed" to a value below the "max indicated speed" in the aircraft config file.

Back up your aircraft config file first, make the changes and try.

regards

Algenon

Might be worth looking that this

http://simviation.com/1/search?submit=1 ... p&x=15&y=5

Had some great feedback

I have a couple of payware aircraft hat have a working FMC in them and have never noticed this before. But to be honest with you I never looked into what speed it was using. But I never had any problems. So maybe there is something in the aircraft cfg file that stops the problem.
I really do not use the FMC a lot though

Also I use this link for most of my flight plans http://rfinder.asalink.net/free/ and than just set the speed in the FMC
I just enter the legs into the FMC and fly. I have never had a problem and do not know which speed it is using I will have to look int that.
I do know that not all FMCS are the same each one seems to have its own method of working. I wondered if this is true in the real world?

Good advice GaryB and Pete. Your experience is had to beat!!!!homeboy