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A/T wont Idle/spd constraints


Matty260191

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AIRAC 2004

EGLC/09  LYD M189 HAWKE UM189 DRAKE DCT OSPOL M189 NEVIL G27 ARE
LFRQ/10

FL240

270/.74 - DEFAULT

LRC - DEFAULT

290/.78/3.0 - DEFAULT

TOW 45000KG

Flaps 4

V1 121

VR 123

V2 128

VFS 198

EGLC LYD5U

LDG WEIGHT 42200KG

FLAP 5

VREF 130

VAPP 135

VAC 159 (F2)

VFS 187

ARE5R DCT RQ401 RNAV10 LFRQ

https://drive.google.com/drive/folders/1ahIibx99GwIMepieZ6v-9yMMpvqJkWQi?usp=sharing 

^This folder contains the following^(too big for this forum)

8 saves(.cust is the same as .FLT) with their .fxml and .wx files also.

The OFP I used (ignore the step climbs i stayed at FL240 the whole time)

2 screenshots showing the FMS arrival constraints.

Save files are as follows:

1 - After FMS setup.

2 - After TOGA button pressed with A/T off.

3 - After start.

4 - During climb(this is when I checked and set up the descent and arrival speeds and constraints).

5 - Shortly after TOC.

6 - Just before TOD.

7 - During descent showing i'm over the FMS selected speed but power above Idle.

7-1 - Another later in descent showing i'm still above the FMS speed but engines applying power as i was in light turbulence.

8 - After shut down.

Notes:

The initial descent at 290Kts was on profile but its gets worse the lower you get as the engines don't Idle completely at the 250/FL100 standard limitation.

Arrival speed constraints were half followed.

The FMS selected 210 for the fix then went straight back to 240 even though the next fix was also 210. I went to manual selected speed to 210 to avoid issues.

When in even the lightest turbulence the speed struggles to bleed off even in level flight as the engines wont Idle.

I was on an RNAV arrival and you will notice even though the FF is 3000ft and the runway is 343ft meaning the FMS should create a descent to give a constant descent angle to the runway, it seem like it just sticks it at 3 degrees meaning it descends steeper than the actual path to the runway. This may be normal for this aircraft but being used to flying PMDG FSLABS and QW I find they all will descend from FF height to the runway at a constant angle to meet the runway height at the runway. 

Please watch the video to see me setup the aircraft performance i left it all to default values to make sure I wasn't causing it.

I spent time making sure I could give you as much detail as possible so please respect this and let me know you have all you need.

For some reason when I save either using auto save or me doing it they save as .cust files. these are exactly the same as the .FLT files as you can open them and see in Notepad. You may have to change them to .FLT and it will work.

 

I love the aircraft and you have done a great job and the only real issue for me is the constraint following(even in SP1) and the fact the aircraft just wont slow down correctly with A/T on.

I am willing to test any future updates as I feel I would prove useful to you.

 

 

OR

 

 

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Hi All

Happy this issue has been reported, I’ve been having exactly the same problem and thought it was me as I’m just learning to fly this plane. Also using Active Sky for weather.

Look forward to it being resolved

Kind regards 

Q

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  • 3 weeks later...

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