14 hours ago, JonathanC said:

Oh this one I know the answer to - update vPilot and it should fix it. There's a whole thread about it, but it is fixed now, I think (I don't do vatsim anymore).

Not fussed about the 737 issues. It's a decent plane, was worth it for $30, I don't care too much about PMDG anyway so it's whatever. 

Ah ok, thanks, but I don´t use that, and I only fly in online in free flight, I left IVAO also many years ago, I will be back in the future maybe. So the problem in the second video maybe is from PMDG or FS24, who knows.

On 1/3/2026 at 9:01 AM, JYW said:

It is the reason I will never use their products.   This goes back to FSX.  The instability and number of crashes that Couatl caused was insane

It has gotten a lot better, I haven't had a couatl crash in a long time.

55 minutes ago, peloto said:

Ok, the same model with LODs or whatever, specifically for represent their aircraft in online to other users, that, yes, can be called online model, if they don´t have that well done it is their bad development in that aspect.

I guess you don't understand how model matching works.

For online representation the sim can't use the full scale models, it would kill performance it if had to render 20 fenix airbusses or 20 PMDG aircraft.

 

Instead it uses either default AI models of the same type of aircraft provided by ASOBO, or uses any other 3rd Party AI Models like AIG or FSTL that one might have installed.

 

No add-on developer provides their own AI Online Model for you to see when flying on VATSIM, IVAO (which has their own models) or Multiplayer.

5 minutes ago, Farlis said:

I guess you don't understand how model matching works.

For online representation the sim can't use the full scale models, it would kill performance it if had to render 20 fenix airbusses or 20 PMDG aircraft.

 

Instead it uses either default AI models of the same type of aircraft provided by ASOBO, or uses any other 3rd Party AI Models like AIG or FSTL that one might have installed.

 

No add-on developer provides their own AI Online Model for you to see when flying on VATSIM, IVAO (which has their own models) or Multiplayer.

I am speaking in free flight in FS20/24, VATSIM-IVAO or any traffic addon can have their own model ofc.

Then we can use a generic model (better performance) or the specifically original plane done with LODs for online without interiors etc. for better performance also etc., are not exactly the same aircraft and its moving parts (and its speed/"Hz" movement) like the blades in helicopters techniques, landing gears more smooth or not in movement etc., I observe that.

1 hour ago, Farlis said:

For online representation the sim can't use the full scale models, it would kill performance it if had to render 20 fenix airbusses or 20 PMDG aircraft.

It will if the they don’t disable the AI traffic flag in the aircraft config file.

i don’t own the 737 so I can’t look

Edited January 4Jan 4 by Tuskin38

21 minutes ago, Tuskin38 said:

It will if the they don’t disable the AI traffic flag in the aircraft config file.

i don’t own the 737 so I can’t look

You don´t need touch any config file, only have the PMDG aircraft or another third party one in the Simulator, and in FS24 options select "High Fidelity" for online aircrafts and not "Simplified", in FS20 is the same practically.

23 hours ago, JYW said:

This is not directly related to the PMDG 738 2024, but I had to rush onto AVSIM and to this thread to say that @Christopher Low is definitely onto something with this potential temperature/ground movement issue in 2024 !

I just flew the Fenix to Yakutsk (coldest city in the world), which was at -41C 🥶
 

After landing and departing the runway, I stopped on the taxiway, holding the brakes.  When I let the brakes go, the Fenix started moving, relatively quickly at idle thrust (flat ground).  I added a little power to get up to 20kts but then, with entirely idle thrust, the Airbus worked it's way up to 34 kts!  

It didn't behave like that at my departure airport (where the temp was 3C), so there is definitely something amiss with 2024's behaviour in the ground in very cold temps.

IRL pilots say the A320 has enough excess idle thrust to move the aircraft. 

this would be the case even more so after a flight when most of the fuels been burned. 
 

not doubting the theory, but the 320 isn’t a good test article. 

1 hour ago, UrgentSiesta said:

IRL pilots say the A320 has enough excess idle thrust to move the aircraft. 

this would be the case even more so after a flight when most of the fuels been burned. 
 

not doubting the theory, but the 320 isn’t a good test article. 

up to 34kts in around 20 seconds?  😄

3 hours ago, UrgentSiesta said:

IRL pilots say the A320 has enough excess idle thrust to move the aircraft. 

this would be the case even more so after a flight when most of the fuels been burned. 
 

not doubting the theory, but the 320 isn’t a good test article. 

The IAEs for sure.  The CFMs much less so.  

2 hours ago, JYW said:

up to 34kts in around 20 seconds?  😄

Like I said, I’m not sure, but yeah, that seems a bit much.
But it is A Thing with some planes 🤙

1 hour ago, UrgentSiesta said:

Like I said, I’m not sure, but yeah, that seems a bit much.
But it is A Thing with some planes 🤙

Yeah in real life the ATR42 will roll at ground idle, even pretty close to MTOW.  
 

Empty?  It’ll roll, and roll quickly. 

The Quality Wings 787 used to move at idle thrust in P3Dv4 (empty plus two thirds fuel), but it was not excessive. This issue with the PMDG 737-800 in MSFS 2024 is far worse than that. It is not realistic. There is something going on with either the aircraft or the simulator itself in very cold conditions. I changed the time of year for my flights at the airports where I have encountered it, because it is not comfortable to taxi the aircraft.

Edited January 5Jan 5 by Christopher Low

1 hour ago, Christopher Low said:

The Quality Wings 787 used to move at idle thrust in P3Dv4 (empty plus two thirds fuel), but it was not excessive. This issue with the PMDG 737-800 in MSFS 2024 is far worse than that. It is not realistic. There is something going on with either the aircraft or the simulator itself in very cold conditions. I changed the time of year for my flights at the airports where I have encountered it, because it is not comfortable to taxi the aircraft.

I would bet that it is something in the simulator rather than the aircraft. Possibly it assumes there is ice or snow on the taxiways when it is very cold (even if it not visible), and changes the ground friction model accordingly?

Just a quick update to say that PMDG have apparently reported this "moving at idle thrust" issue to Microsoft. Another PMDG user has reported a similar issue, although strangely it is UK airports where they are affected by it. I have not experienced the issue at any UK airport to date, so the cause is a bit of a mystery.

Edited January 10Jan 10 by Christopher Low

I love the 737 just because of the workload the a320 Fenix is also great but just feels more like a IPhone where you only have to push the “on” button.