Fuel weight data disagree error

[pijnackerpilot]

Hello all, 

 

Today I did a Qatar flight from Islamabad (OPIS) to Doha (OTHH) in the A35K. I set up simbrief to take along a block fuel of 33000 which is plenty for this flight. As per OP, I loaded the fuel and payload via the load sheet. All as indicated on the OFP, generated by simbrief using the A35K profile provided by simbrief. After loading the Fuel and Load page (screenshot taken after being airborne for one hour), I already noticed that the required fuel enroute burn was significantly lower than stated below. 

The route includes a step climb to FL400 at TAPDO over the Persian Gulf about 2/3 into the flight. 

After take of I got a master caution and an ecam memo that states Fuel Weight data disagree. I followed the steps on the ECAM but all checks out. I don't know where this message is coming from. All checks out during the flight. Fuel consumption is according to the flight plan and I didn't have any fuel leaks

What is causing this error and why does it still impact landing performance even if all is good.

Additonally, on the STS page it states that BTV and autoland are now inop. Why?

I hope someone can help me out here on what is going on.

Thanks in advance. 

 

 

 

Edited March 27 by pijnackerpilot

[sunake]

Hmm not sure, is it possible something changed your fuel quantity during the flight? Did you use gsx to load and the correct fuel amount was loaded? 

[pijnackerpilot]

That might be the case. GSX was acting up the whole ground time prior to take off.

What is recommended regarding proper use of the OIC 'loadsheet' page in conjunction with GSX integration? In what order do things need to be done to do it properly?

 

[sunake]

I have no clue at the moment. I'm waiting for all the A350 and GSX integration bugs to be ironed out before I even install GSX. 

[nirhtac]

Just got the same issue, doing a flight from sydney to kuala lumpur but right after takeoff I got that same ecam message. Any fixes?

 

[Miao Si]

Hi All, I've had this issue on 1.0.7 too.

So far, I have been able to bypass the error to get BTV and autoland operational by simply "resetting" the ZFW on the Fuel&Load page of the active FMS

To "reset" ZFW, just click the field box and hit "enter" without typing in any values.

• If you're using SimBrief, you may also need to reimport your loadsheet from SimBrief before "resetting" the ZFW via the FMS.

Hope it helps!

Edited Thursday at 04:52 PM by Miao Si
Included more specific information

[Isiattie]

Same thing happened to me, after updating to 1.0.8.  Flying KLAX-WSSS, 2 mins after takeoff...

Tried resetting simbrief loadsheet, and ZFWCG on active FMC, but just doesnt clear.  Also tried adjusting the FINRES values.

Also, on systems, NO AUTOLAND message,

[Evan Boyle]

Had the exact same issue after 1.0.8 as @Isiattie

[magret2canard]

This issue is linked to the boarding done via GSX.

Could you try just to load and apply ZFW/Fuel from the OIS without using GSX?

[Isiattie]

I don’t use GSX for boarding.  Only for pushback.  
 

I always use the OIS to sync with simbrief and then the FMCS. And from there also load weight and fuel.  
 

I’m doing the return flight as we speak, got the same message.   
 

it must be something related to 1.0.8.   It didn’t happen on prior versions.