SVS Inop indication on PFD; SVC/0 Offline

[joni80]

Hi, One of my Airframes is having an issue in that upon setting the plane up, the SVS Inop message appeared and didn't go away upon the IRS's and GPS being aligned. Re-Aligning the IRS and also restarting the Sim and powering up the plane again is also not helping with it. Upon looking into the PL21 Advanced Operators Guide, it advises one to press the FCP XFR button, yet this also doesn't help; infact both CPT and FO PFD's are showing the SVS Inop message. Upon doing some digging in the ARINC 429 Browser, the responsible SVC/1 is showing up, but its transmitter SVC/0, is showing up as being offline. Below the screenshot showing left the "broken" airframe, right being a completely new one:

The same goes for the L-GPS-2 Bus, where the Receiver SVC/0 is also logically shown as offline. Most likely the other Busses that provide data for SVC/0 show the same result, yet I did not search them up for now.

All 3 IRS are aligned and all are showing the same position. Both GNSS's are also aligned and are indicating the same position as the IRS's, so to my understanding the SVS should not bail out due to the position being off. Below are 2 screenshots, again comparing the 2 Airframes (Upper the "broken" one, Lower the New one)

I am aware that creating a new Airframe would solve the issue, though I'm kinda curious to find out if the Airframe is still "fixable". I did check the CB panels, yet could not find any popped CB. With my resources, I am unable to say if there is some CB responsible for the SVC, hence I wouldn't know if some CB popped in another area of the plane. Any insights regarding this issue are appreciated.

Log.txt

Edited March 5, 2022 by joni80