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TBM's Nose Bobbing Up and Down on ILS Approach

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9 hours ago, EvidencePlz said:

you mean like this? 😁

 

Great find!  For others... the relevant portion is 18:00 minutes into the video.
I watch Stevo often.

 

Edited by fppilot

Frank Patton
Corsair 5000D Airflow Case; MSI B650 Tomahawk MOB; Ryzen 7 7800 X3D CPU; ASUS RTX 4080 Super; 
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Former USAF meteorologist & ground weather school instructor. AOPA Member #07379126
                       
"I will never put my name on a product that does not have in it the best that is in me." - John Deere

  • Replies 82
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Aside from people making random changes to the config files for these airplanes, I honestly wonder how many of these issues are caused by people simply turning knobs and never having the airplane in a decent state of trim to begin with. Autopilots are like GPS in cars: they're useful if you know how to use them and understand their limitations. But they will not fly the airplane perfectly for you if you don't have a reasonably stable aircraft when you flip them on. I keep meaning to try the 930 and see if I encounter these problems.

My suggestion for people having these types of issues: turn the autopilot OFF and see what the airplane is doing! If you turn the autopilot off and it immediately makes a huge attitude/airspeed change, you need to start looking elsewhere for the problem, e.g. the mirror.

6 minutes ago, mtr75 said:

Aside from people making random changes to the config files for these airplanes, I honestly wonder how many of these issues are caused by people simply turning knobs and never having the airplane in a decent state of trim to begin with. Autopilots are like GPS in cars: they're useful if you know how to use them and understand their limitations. But they will not fly the airplane perfectly for you if you don't have a reasonably stable aircraft when you flip them on. I keep meaning to try the 930 and see if I encounter these problems.

My suggestion for people having these types of issues: turn the autopilot OFF and see what the airplane is doing! If you turn the autopilot off and it immediately makes a huge attitude/airspeed change, you need to start looking elsewhere for the problem, e.g. the mirror.

It's not a secret that MSFS' flight models and the APs arent the best. I'm far away from "making random changes" therefore i am here in the forum trying to gain information before i edit anything.

But thanks for your generous advice!

Intel i9-13900K | Gigabyte Z790 Aorus Master | RTX4090 | 2x16GB Corsair Vengeance DDR5-6000 | Be quiet! Pure Loop 2 FX AiO | Win 11

30 minutes ago, ThomseN_inc said:

It's not a secret that MSFS' flight models and the APs arent the best. I'm far away from "making random changes" therefore i am here in the forum trying to gain information before i edit anything.

But thanks for your generous advice!

Honestly, get the airplane to where it's doing whatever it is you don't want it to do - in this case bobbing up and down on the ILS - and then turn off the autopilot. You might be surprised what's going on with the plane.

That's where I'd start if I were having this issue.

No bobbin up and down for me 

 

13 minutes ago, devgrp said:

No bobbin up and down for me 

Yeah great show off but this does not contribute anything to help the OP.

Intel i9-13900K | Gigabyte Z790 Aorus Master | RTX4090 | 2x16GB Corsair Vengeance DDR5-6000 | Be quiet! Pure Loop 2 FX AiO | Win 11

  • Author
2 hours ago, mtr75 said:

.....  I honestly wonder how many of these issues are caused by people simply turning knobs and never having the airplane in a decent state of trim to begin with.

Good point -- the autopilot is not a trimming tool!  And getting an a/c in trim in the sim can be a little more difficult than in a real plane since in the RW you feel the pressure decrease on the yoke as you get the a/c in trim. 

Al

2 hours ago, ThomseN_inc said:

Yeah great show off but this does not contribute anything to help the OP.

Actually it does, it shows that the plane is working just fine. Seems like any little thing out of the ordinary and Asobo is to blame even though it might be user error 

3 hours ago, ThomseN_inc said:

I have the same issue everytime i am @FLC and the wind changes in direction/speed. Its a constant wobbling and bobbling.The TBM seems very unstable at the moment.

I just completed a flight using flc, and it was rock solid. If you fly the ils approach correctly, the plane will glide down the glide slope like a stripper on a greasy pole. Lots of tutorials on youtube, maybe go back to the C152 and forget about the autopilot for a while. 

26 minutes ago, Ricardo41 said:

maybe go back to the C152 and forget about the autopilot for a while. 

Go back? I skipped the C152 directly...

Strange because the TBM was working flawlessly until the last patch. So i assume the problem is not the operator here.

Intel i9-13900K | Gigabyte Z790 Aorus Master | RTX4090 | 2x16GB Corsair Vengeance DDR5-6000 | Be quiet! Pure Loop 2 FX AiO | Win 11

1 hour ago, devgrp said:

Actually it does, it shows that the plane is working just fine. Seems like any little thing out of the ordinary and Asobo is to blame even though it might be user error 

There’s a massive and varied history of autopilot oscillations on a variety of aircraft in the sim. 
 

To suggest it’s not Asobo is complete stupidity. It was on the known fault list for gods sake, and there’s dozens of threads reporting exactly the same all over the forums. 

Edited by 2reds2whites

18 hours ago, fppilot said:

No way to assess unless you provide detail on how you have configured at the time.  Power, airspeed, flaps, gear.  And when and how deployed for each.

Not true. An autopilot should never oscillate in pitch for more than a few seconds. Power/airspeed/config all irrelevant. 

43 minutes ago, 2reds2whites said:

There’s a massive and varied history of autopilot oscillations on a variety of aircraft in the sim. 
 

To suggest it’s not Asobo is complete stupidity. It was on the known fault list for gods sake, and there’s dozens of threads reporting exactly the same all over the forums. 

OK it could have been there from all the noobs who has no idea what they are doing up voted it or it it could be trolls. You can clearly see in my video that there was no bobbin up and down on the app. I've seen one guy on FB complain about the airbus not following the GPS and turns out the plane wasn't even in managed mode. 

1 hour ago, Ricardo41 said:

I just completed a flight using flc, and it was rock solid. If you fly the ils approach correctly, the plane will glide down the glide slope like a stripper on a greasy pole. Lots of tutorials on youtube, maybe go back to the C152 and forget about the autopilot for a while. 

You're right, I've done tons of ILS app in the tbm, sr22, king air and c172 and never had a bobbin up and down problem on the ils or glide slope. 

1 minute ago, devgrp said:

You're right, I've done tons of ILS app in the tbm, sr22, king air and c172 and never had a bobbin up and down problem on the ils or glide slope. 

If you say so.... 😄

Intel i9-13900K | Gigabyte Z790 Aorus Master | RTX4090 | 2x16GB Corsair Vengeance DDR5-6000 | Be quiet! Pure Loop 2 FX AiO | Win 11

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