A320 FMGS B50

[jeehell]

Hi FMGS users,
Anyone got the issue of Vertical speed V/S randomly active and remove the managed mode?
I got this error yesterday during an ILS approach. V/S automatically active and remove the G/S mode.
First I thought my encoder has the bouncing problem, however after disable completely the encoder, the V/S mode issue still happened randomly.
Thanks and merry Christmas!

Vu

This sounds like a V/S reversion due to too slow/high speed. >Could happen if you were in flaps 1 at high weight, speed could keep increasing.

[DannyT]

Hello,

Can someone explain why i can not enter Init B in MCDU?
When I push arrow button, MCDU says not allowed?

Dennie

[jeehell]

That's when engines are running, you're then supposed to input fuel in FUEL PRED page (you're no longer in planning stage at that point, fuel computations are slightly different)

[DannyT]

Ok, I see.
THX

[masterp]

This sounds like a V/S reversion due to too slow/high speed. >Could happen if you were in flaps 1 at high weight, speed could keep increasing.

Thank JL. I found that was an error from my hardware, the pull button of VS encoder was bounced randomly and remove the managed mode.

[masterp]

Hi

I remember in previous thread someone experienced the sinking of aircraft to ground at takeoff rotate?
i just got this issue when replace aircraft in FSX\simobject\airplane by 2 aircraft folder in A320FMGS
this is the video of issue : https://youtu.be/Jly8cLlfy10
thanks
Vu

[Leonidas]

Hi
I remember in previous thread someone experienced the sinking of aircraft to ground at takeoff rotate?
i just got this issue when replace aircraft in FSX\simobject\airplane by 2 aircraft folder in A320FMGS
this is the video of issue : https://youtu.be/Jly8cLlfy10
thanks
Vu

Same to me two days ago in Oslo (ENGM) following by crash. I restart FMGS, then repeated the flight with same result.
Regards

[jeehell]

Next release should fix that issue.
You can try to be more gentle on the stick during rotation (avoid full aft stick as much as possible, use UP trim, try to have an AFT CG, and maybe try with flaps 2).

[romeow]

Same to me two days ago in Oslo (ENGM) following by crash. I restart FMGS, then repeated the flight with same result.
Regards

Do you use TOPCAT?
I use this tool for calculation of ZFW/ZFWCG (/MAC) and I've never faced this issue so far. MAC is between 30% and 36% and insofar an AFT CG (as Jeehell recommended).
Regards

[Leonidas]

Do you use TOPCAT?
I use this tool for calculation of ZFW/ZFWCG (/MAC) and I've never faced this issue so far. MAC is between 30% and 36% and insofar an AFT CG (as Jeehell recommended).
Regards

Yes I use it for ages... but I had this issue for the first time. I use the conf file for A320-214 sharing here (do you use the same?), always I get 30-36% MAC as you said, but never get poritive values for vertical stabilizer (usually 0.9-1.4 down).

I also have some diferences between O, S, and F MCDU PERF speeds and PFD speed tape ones. Eg. 210, 193, 144 and 209, 199, 147. Biggests are always S speeds. I usually fly sort legs (150-350NM) loading 4.5-7 tons fuel. The same speed difference when I enter CG and BLOCK manually, or via JeeHell's 3R MCDU INIT page 2 key. Always load A/C with Topcat - Send command.
Please take a look to comments #223-230 here and tell me how do you use Topcat.

Thanks a lot.
Regards