[ATR 42/72] EFB incorrect weight calculation

[joker8913]

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2 tags are required: One for platform, and one for aircraft.

Are you using Developer Mode or made changes in it?

no

Have you disabled/removed all your mods and addons? If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the Community Support section.

not mod related

Which aircraft are you reporting an issue about? (Please also add the proper tag for it)

ATR 42/72

Brief description of the issue:

After entering weight figures (ZFW, fuel), the calculated total weight is correct, but after clicking “start loading”, weights don’t match: ZFW + fuel does not match with the calculated gross weight

Provide Screenshot(s)/video(s) of the issue encountered:

atr_load.gif - Google Drive

Detailed steps to reproduce the issue encountered:

Go to “Payload” EFB page
click “Load aircraft”
input desired Zero Fuel Weight and Fuel
Note that the Gross weight figure is correct
click “Start Loading”
the Gross weight updates with a lower weight

PC specs and/or peripheral set up if relevant:

Build Version # when you first started experiencing this issue:

1.33.8.0

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Do you have the same issue if you follow the OP’s steps to reproduce it?

Provide extra information to complete the original description of the issue:

If relevant, provide additional screenshots/video:

[NixonRedgrave]

Do you have the same issue if you follow the OP’s steps to reproduce it?

Yes

Provide extra information to complete the original description of the issue:

I am having this issue with version 1.0.36 released 18JAN2024.

I have removed all mods except Navigraph and the ATR.

On the Flight Plan tab of the EFB I’ve clicked “Import OFP”, “Set Flight Plan”, “Set Fuel” & "Set Payload’

However, the Zero Fuel Weight value on the EFB states “33252”, yet nowhere in the OFP, itself, is that value found. The EST ZFW in the OFP is “33814”. (I have verified that the airframe profile on SimBrief is using the same weight values for the empty airframe, crew, passenger weight, etc.)

Then, when looking at the MFD PERF page, the values do not match what the EFB has imported for the OFP:

Then, when choosing to enter the weights manually via the Payload tab of the EFB, the ZFW & FOB weights on the MFD PERF page still do not correlate with what was entered:

If relevant, provide additional screenshots/video:

[ASCIIKode]

Do you have the same issue if you follow the OP’s steps to reproduce it?

Yes I do.

Provide extra information to complete the original description of the issue:

Using the “flightplan simbrief” tab also creates strange results. The actual Gross Weight in the default “weights and balance” screen is off by almost 5000 lbs.

If relevant, provide additional screenshots/video:

[DementedCorn327]

Is that the same issue that has been fixed in an earlier version ?:

ATR EFB Weight Entries

Thank you for using the Bug section, using templates provided will greatly help the team reproducing the issue and ease the process of fixing it. Are you using Developer Mode or made changes in it? No Have you disabled/removed all your mods and addons? No Brief description of the issue: Guys, it’s 2023 and the ATR is a first-party, “Expert Level” add-on. I shouldn’t have to be writing this post, especially not post-release. The EFB needs to take weight entries. Not read them. W…

There is also that topic about an issue when importing data from simbrief but not sure it is the same than the OP:

ATR Update 1.0.20 Incorrect payload weights in MSFS after Simbrief import

Thank you for using the Bug section, using templates provided will greatly help the team reproducing the issue and ease the process of fixing it. Are you using Developer Mode or made changes in it? no Have you disabled/removed all your mods and addons? no Which aircraft are you reporting an issue about? (Please also add the proper tag for it) Asobo ATR atr-42 atr-72 Brief description of the issue: The values of the imported Simbrief flightplan are not transfered correctly i…

[Speedbrake22]

Does this also happen with the payloads set to KG?

[NixonRedgrave]

I tired it with both KG and LBS and experienced the same issue.

I went back to SimBrief and altered both my airframe profile from LBS to KG (I’m in the USA) and regenerated the OFP with KG.

I saw the same problem manifested.

[BragRaindrop933]

Just adding my two posts in here referencing this problem and findings

[January 18, 2024]: Expert Series 1: ATR 42-600 / 72-600 v1.0.36

OK @NixonRedgrave you asked for it. Playing around with simbrief and EFB this morning, there are definitely inconsistencies and it depends on how you use the EFB to enter & load the data. CASE 1 (EFB-> SET FLIGHTPLAN/FUEL/PAYLOAD) Summary: loads flightplan into FMC doesn’t load perf data at all into FMC does load (wrong) data into MDU Simbrief data looks OK after import to EFB [atr_1] Simbrief data won’t load into FMC after a SET FUEL/PAYLOAD in EFB [atr_2] Simbrief data doe…

[January 18, 2024]: Expert Series 1: ATR 42-600 / 72-600 v1.0.36

@NixonRedgrave OK Time to add in new data Case 4 FMC data entered only Start off with cold and dark + battery +ground power, no EFB interaction. FMC WEIGHTS page blank to start, data is visible in MDU [atr_11] Manually enter data in FMC and only thing that gets updated in MDU is T/O CG and T/O TRIM (yellow text), Green text in MDU doesn’t update [atr_12] . Case 5 Default Sim Weights and Balance Toolbar Again ignoring EFB. If I open the default sim weights and balance form, I find t…

[MissTschai]

I’m now again using the method which worked well for me before the update.

I import the flight from simbrief, I then press SET FLIGHTPLAN / SET FUEL / PAYLOAD
Checking the simulator weights and balances show, that it actually did make changes to the weights. I then initialize the weights on the FMC → Init and proceed to fill out all other FMC sections.

There are small discrepancies, but overall it is close enough (for me at least).

But, I would still hope that this is being looked at so that the actual EFB load aircraft function can be used and that all numbers are the same across systems.