I know it's pure trivia, but it has made me wonder anyway.
While selecting GPS monitor in the FMGC the GPS time is displayed for both GPS 1 and 2. According to the FCOM the onboard clock takes it time from said GPS, however, it is always around 7/8 seconds fast. This goes for both the 320 / 330 / 345, I have flown and seen this in all 3 types.
On the 343 it's different since the onboard clock doesn't use the GPS time, and somehow the minutes tick over when the second hand reaches 30'
Does anybody know why the onboard clock is running ahead of the GPS clock, even though it supposedly takes it's time from the GPS clock?
Thanks for sharing your thoughts
