PMDG 737 LNAV too aggressive last patch ?

[roi1862 611]

Anyone else noticing LNAV getting degraded ? it simply cant complete turns with one smooth turn at a gentle turn rate. Currently even at cruise its making even a relatively small turn in 2 turns of 30 degrees bank. It starting turn nicely and all of a sudden it banking to 30 degrees to catch the route. 

For some reason LNAV was always the weak spot of PMDG. Other than that its a great plane !  

[Jazz 1,047]

I can honestly say I haven't noticed this behaviour. Mine seems to be as smooth as ever. I will keep a close eye on my next flight.

Edited February 21, 2023 by Jazz

[vadriver 251]

57 minutes ago, roi1862 said:

LNAV was always the weak spot of PMDG

in what sim ????

[roi1862 611]

14 minutes ago, vadriver said:

in what sim ????

I am pretty sure i am in MSFS forum…? 

[Paladin2005 445]

There is no weakness recognizable for me. Works fine in every flight i have done so far in the 737-700.

[roi1862 611]

2 minutes ago, Paladin2005 said:

There is no weakness recognizable for me. Works fine in every flight i have done so far in the 737-700.

So you confirm the plane never take sharp turns of over 15 degrees bank angle during cruise ? 

[Paladin2005 445]

not sure if 15 or 20 degrees, but bank is always limited to max 20 on my autopilot panel.

[roi1862 611]

Just now, Paladin2005 said:

not sure if 15 or 20 degrees, but bank is always limited to max 20 on my autopilot panel.

Just FYI, LNAV is no affected by the HDG bank angle limit selector. 

[Jazz 1,047]

4 minutes ago, Paladin2005 said:

not sure if 15 or 20 degrees, but bank is always limited to max 20 on my autopilot panel.

As Roi mentioned, that only affects HDG mode. LNAV manages its own bank angles.

[Paladin2005 445]

Interesting! I thought it affects all autopilot operations.

[Jazz 1,047]

2 minutes ago, Paladin2005 said:

Interesting! I thought it affects all autopilot operations.

As I understand it, the reason pilots turn down the bank angle limit to 10 on the MCP when above 30,000 is in case ATC gives them vectors when above that altitude and they have to select HDG mode for manual inputs.

[Bobsk8 12,944]

Done a bunch of lnav approaches, haven't seen any problem.

[synape 16]

2 hours ago, roi1862 said:

Anyone else noticing LNAV getting degraded ? it simply cant complete turns with one smooth turn at a gentle turn rate. Currently even at cruise its making even a relatively small turn in 2 turns of 30 degrees bank. It starting turn nicely and all of a sudden it banking to 30 degrees to catch the route. 

For some reason LNAV was always the weak spot of PMDG. Other than that its a great plane !  

I also don't like PMDG 737's LNAV turn behaviour. DME Arc procedures are always jerky and not at a continuous gentle turn rate. And it always turns at 30 degrees no matter the altitude is. By comparison, Fenix A320 is such a joy and very gentle during turns.

[Steve_Ellis 273]

I was hoping you were going to say VNAV, because something has definately changed there since the update

[Paladin2005 445]

Interesting, i have clearly never had a problem with the turning, also no extrem banking. Is there a specific approach or flight situation when it happens?