[A380X]: TRK/FPA button changes FD style

[BravoMike99]

Aircraft Version

Development

Build info

{
    "built": "2024-09-26T14:59:07+00:00",
    "ref": "refs/heads/master",
    "sha": "341b9c3efaa7e452132ed6b994c5772ed3e4a2cd",
    "actor": "crocket63",
    "event_name": "manual",
    "pretty_release_name": "master:341b9c3e",
    "version": "a380x-v0.12.0-dev.341b9c3"
}

Describe the bug

Pressing the TRK/FPA button on the FCU changes the FD style like the A32nx, it shouldnt.

Expected behavior

FD style shouldnt change & VV Pushbutton should become lit

Steps to reproduce

Press TRK/FPA button once in the air with FD active.

References (optional)

FCOM & https://youtu.be/Nm0McB3t3r4?t=43

Additional info (optional)

No response

Discord Username (optional)

No response

[tracernz]

I think the VV thing opens more questions than it solves... Can you then turn off VV in TRK/FPA mode? Does it automatically turn off when you leave TRK/FPA, if it was automatically on? If so, what about if it was manually pressed either before TRK/FPA, or during?

[BravoMike99]

I think the VV thing opens more questions than it solves... Can you then turn off VV in TRK/FPA mode? Does it automatically turn off when you leave TRK/FPA, if it was automatically on? If so, what about if it was manually pressed either before TRK/FPA, or during?

The first one seems to be explained in the FCOM:
"When TRK-FPA is selected, pressing the VV pb has no effect: Both PFDs continue to display the
FPV, and the VV light remains on."
Regarding the second one, its a bit vague as it only says that the PFDs stop displaying the VV once out of TRK/FPA mode, so we'd need someone to test that out on the real aircraft.

[tracernz]

Do we know if the FD style in TRK/FPA mode is a pin prog, or always dual cue?

[BravoMike99]

I have checked 3 FCOMs so far (QTR, UAE & KAL) alongside AFR & DLH videos and they all are dual cue. No mention of such thing on the IF INSTALLED TABLE either so I suspect its not a pin prog. Unfortunately I don't have access to more sources of information than that so I cant confirm for sure.