Guys, the disconnect button on the throttles does not work with me, I was able to land because the minimum speed is limited to landing speed but nevertheless I'd like to be able to disconnect the autothrottle. What setting in PMDG MD-11 options is responsible for that?

 

*Key assignment doesn't work.

*throttle override doesn't work (checked override in the options).

*physical button on the throttles, as noted, doesn't work either. It does click, makes a clicking sound, let's me to control the throttles for 2 seconds then reengages - if that may be a hint.

 

 

What setting in PMDG MD-11 options is responsible for that?

 

Have you flown the tutorial? If so, were you able to complete it successfully?

 

Also, full names in the forum, please.

I've read the tutorial but I flew my own route. It was well done start to end, the aircraft landing with AT-"on" until 50 above runway (I disengaged AP [button on the yoke] at 1000) and flew it down at around 150knts, AT disengaged itself at touch down. Despite the tutorial, I know there is a way to disengage the AT, I would like to know how. 

Alexander Zar

 

 

flew it down at around 50knts

 

50 knots? If I remember right, the MD-11 will automatically increase thrust to keep the airplane from developing a stall. 

150. Which too a bit too high, then I looked at landings on youtube and apparently 150kts is a normal approach speed.

I flew it EHAM-KJFK overnight, arrived with about 16000lb fuel. That's ok, it was smooth. I just like to know about the throttles.

Alexander Zar

I just like to know about the throttles.

See page 30.1 of the systems manual.

See page 30.1 of the systems manual.

I know that.

It's not about "what I press to disconnect" it, it's about "why it reengages itself". The button on the throttles and the key assignments do disengage it but then it reengages by itself. Perhaps something I did wrong with systems set up during cold & dark start up, gotta go over it and play with the systems. It's a beautiful software (system simulation / 3D visuals), not the fault of a programmer (PMDG) that Douglas' designs are not as friendly and easy to understand as Boeings -))) It took me some time to fully understand the systems on the MD-80 too (Coolsky's), but we managed.

 

 

The button on the throttles and the key assignments do disengage it but then it reengages by itself.

 

Are you pressing the button once or twice?

 

 

 

Also, I know you've signed the rest of the posts, but please don't forget. You should be able to configure it to do it automatically by clicking your username at the top right > My Settings > Signature (on the left) > Add Signature in the box > Save Changes (at the bottom)

The ATS will re-engage itself if the aircraft speed drops below Vmin. Your approach speed of 150 knots...how did that compare to the FMC approach speed ?

 

What was the aircraft weight ?  What flaps were you using?

Even at 50 Flaps, if you loaded full pax and cargo and had 16,000 lbs fuel your vref would be about 150. So your very minimum during the approach should be 155  .... so it would not take much of a dip below that for the speed protection to kick in and the A/T will re-engage.

Even at 50 Flaps, if you loaded full pax and cargo and had 16,000 lbs fuel your vref would be about 150. So your very minimum during the approach should be 155  .... so it would not take much of a dip below that for the speed protection to kick in and the A/T will re-engage.

 

Aha! That makes sense now -)

Hi,

 

I asigned the letter T to disconnect the auto thrust and it works for me. But I find rather low speed 150 kts for an MD11. As another user said the protection may have taken over and increased thrust.

 

Francisco

(Flying a "Bus" for life)