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Problems with Trottle and Thrust - 600 Model

Featured Replies

Hi everyone,

 

i have a Problem with Throttle and Thrust with the 600 Model. When i´m fly a second leg and die 737-600 is reach the top of descent, the thrust don´t go to idle. He go down to 60-70 % N1 but not to idle. So the Boing cannot reduce the speed. When I turn off the auto-thrust the throttle to forward and the thrust is going to full thrust (max N1) and the speed goes in the red area.

 

I can do what i want, there is no reaction. Not with the hardware throttle, not with F1 and when I use the mouse to give the throttle to idle, the throttle just turn back to maximum power. When I turn on the the auto-thrust, N1 goes to 60-70 %. And as well no reaction with hardware or or or. A landing is impossible.

 

Please notice: This problem ist only with the 737-600, and only and every time at the second leg without new loading the aircraft on airport B (from A to B and as second leg from B to A), and only after top of descend ist reached. Befor all is ok with throttle and thrust.

 

All the others 700/800/900 works perfect.

 

Can someone tell me, what this is and have a solution for me?

 

Many thanks for your help.

 

greetings

Oli

Sounds like a VNAV issue. Check your VNAV profiles prior to entering the descent. I have never seen the throttles go below 60% during a decel, and that probably has a lot to do with how thin the air is up on high.

RW ATPMEL CFI/II/MEI

ERJ170/90PIC, CE525 SIC

 

  • Author

Thx for your answere,

 

you are right. The throttles don´t go to ground idle during a decel. I meen the idle on air. I fly in FL 160 and normaly when I reach the top of descent the throttles go to idle, ca. 40 % N1.

 

But with the 600 Model the throttle go to 60-70 % N1 and the speed run to over 300 knt indicated airspeed after entry the descent path. The registered airspeed is 279 knt.

 

I think this sounds like a VNAV issue, too. But I don´t know what, because...

 

..every time at the first leg all looks good and I never have a problem. And only and every time the problems comes at the second leg and only by/respectively reaching top of descent, and only with the 600 model. With 700/800/900 all time all is ok. With their i can fly 5 legs without new loading, and without any problems.

 

And what about the throttle control when I turn off auto-thrust? The engines are running high for maximum power N1. No manual input is accepted. Only with 600 and only after t/d and only and every time at the second leg. Otherwise there is a problem before.

 

greetings

Oli

Could you take a look at the "A/T Manual Override" configuration setting within your 737-600's aircraft equipment setup (PMDG SETUP -> AIRCRAFT -> EQUIPMENT), and tell us which option you've got selected?

It needs a fresh re-loading of PMDG or FSX.

Search the forum regarding your problem and re-loading.

I believe that what you want to do is not possible without the re-load.

David Pedder

It needs a fresh re-loading of PMDG or FSX.

Search the forum regarding your problem and re-loading.

I believe that what you want to do is not possible without the re-load.

 

From what ui could make out he is not reloading the aircraft, only shutting down at the gate, and starting bk up for leg 2. i have done this many times with no problem. (gatwick to corfu, to bari, to sion, to bristol then liverpool, all 1 flight, 1 sim session, no reloading.)

Regards

Luke M

  • Author

Hi,

 

in the "A/T Manual Override" the option "In hold/Arm Mode only" is selected. Is the same as 700/800 and 900. And their are without problems.

 

Now i´ve make a new test flight and i´ve maked pictures.

 

At the first you can see with A/T is on. My hardware throttle position ist on idle and should be below 40 %  N1 on 737-600, but the thrust is over 60 %.

 

 

And the second you can see with A/T is off and the hardware throttle position is on idle.

 

And once more: Only with the 600 model and only at the second flight. All the other models has not one problem.

  • 2 months later...

@jerzem: Did you solve your problem? I've exactly the same.

 

Bernhard

  • 4 months later...
  • Author

Hi Bernhard,

 

i´m sorry, but I did solve this problem until now. Have you a solution?

 

Oliver

I've the same problem.

 

Enviado do meu GT-S7562 utilizando o Tapatalk

 

 

Does not sound like a VNAV issue.

 

Of course, you can simply rule that out by trying LVL CHG. If the throttle is unable to go to idle, then you know it's something else. VNAV isn't too secretive about it's throttle movement. If it says "RETARD" it should go to the same idle as LVL CHG or no A/T.

 

 

 


Sounds like a VNAV issue.

 


I think this sounds like a VNAV issue, too.

Matt Cee

No, please! I have to fly with the 600 (first time) for an event. Hope everything will be fine.

It is really weird, after landing I did my workflow as always, then I noticed that my speedbrake light was illuminated but the lever was not armed! I tried to change it but it does not work, also I noticed the throttle did not move so I decided to restart my FSX. It seemed me a bit too risky to try that while event flight. In case that this is really a bug, would it be possible PMDG repair it? I liked the -600 and want to fly more with it, but without bugs.

I have had the same experience with the 600 myself several times (never in the 700/800). Never found a fix for it.  

Daniel Nilsson 

 

1095682.png

 

 

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