fix(a380/mfd): trip fuel calculation & block not editable across flights in fuel & load

[BravoMike99]

Fixes #[issue_no]

Summary of Changes

Fixes wrong landing weight value in mfd fuel & load.
Clear taxi fuel once outside of preflight phase rather than setting 0.
Fixes block fuel not being editable across flights.

Screenshots (if necessary)

References

Additional context

Discord username (if different from GitHub): bruno_pt99

Testing instructions

1. Program the FMS with any route of your choice.
2. Verify that the landing weight value displayed on the fuel & load page goes in line with the predictions.
3. Verify that you can insert a manual taxi fuel entry and that the font becomes bigger if a manual entry was performed. Once deleted, the font should become smaller and revert to a value of 1.5T.
4. Change the FMS to takeoff phase by setting toga thrust for example. TO phase can be verified by green "TO" in the MFD performance page. Verify the taxi fuel is dashed in the FUEL & LOAD page and not editable.
5. Shutdown the engines, verify it is possible to edit the block fuel after the FMS resets ( < 20% N2) in the fuel & load page.

How to download the PR for QA

Every new commit to this PR will cause new A32NX and A380X artifacts to be created, built, and uploaded.

1. Make sure you are signed in to GitHub
2. Click on the Checks tab on the PR
3. On the left side, find and click on the PR Build tab
4. Click on either flybywire-aircraft-a320-neo, flybywire-aircraft-a380-842 (4K) or flybywire-aircraft-a380-842 (8K) download link at the bottom of the page

[flogross89]

LGTM, thanks!

[utkrishtm]

Quality Assurance Trainee Report

Discord Username : utkrishtm
Object of testing : #9788
Aircraft : A380X
Tier of Testing : 1
Date : 22/01/2025

Testing Process:

• Loaded route into FMS
• Verify that the landing weight value
  • Small discrepency, nothing major
  • Estimated LW from Simbrief: 362.3 T
  • Estimated displayed on the Fuel & Load Page: 368.5 T
• Font and logic for manual taxi fuel works

Testing Results:
Passed

Negatives:

• As soon as I click on the taxi fuel entry (preflight phase), if the value is not changed, the font still becomes bigger. The font shouldn't change if the value was not changed.

Media:

[BravoMike99]

Quality Assurance Trainee Report

Discord Username : utkrishtm Object of testing : #9788 Aircraft : A380X Tier of Testing : 1 Date : 22/01/2025

Testing Process:

• Loaded route into FMS

• Verify that the landing weight value

  • Small discrepency, nothing major
  • Estimated LW from Simbrief: 362.3 T
  • Estimated displayed on the Fuel & Load Page: 368.5 T

• Font and logic for manual taxi fuel works

Testing Results: Passed

Negatives:

• As soon as I click on the taxi fuel entry (preflight phase), if the value is not changed, the font still becomes bigger. The font shouldn't change if the value was not changed.

Media:

Thanks for testing 👍 . The font changing size even if the value hasn't changed happens across many MFD fields. Perhaps you could raise an issue about that