Extra Time on Perf Page doesn´t update

[David Malka]

During the FMGS preparation, using the attached OFP, when i got into the INIT B page I noticed that the ALTN fuel value was much bigger than the one on the OFP so, I tried to change that value but I didn´t work. Moving to the second option, i decided to change the MIN DEST FOB value which worked however the EXTRA/TIME field didn´t reflect that. In the images I attached you can see that my predicted landing fuel is 17,2t which gives me a 0,9t extra using the value insert at MIN DEST FOB (16,3t) as reference but the EXTRA/TIME does not reflect that. That said, i have two questions:

1 - Since the ALTN field on the INIT B/FUEL PRED page is blue, wasn´t I supposed to be able to change it?

2- The EXTRA/TIME field isn´t supposed to use the MIN DEST FOB page as reference instead of ALTN+FINAL?

SBBRSBEG_PDF_1774354130.ddbb62cb.pdf

[IniJamir]

I'll pass this a long to the team, thanks 🙂