Apologies if this is slightly off topic, but since we are on the subject of WTBs - I fondly recall being told during my initial LFUS by a senior training captain not to meddle with the date setting function of the onboard clock, as an accidental setting to a date too far ahead in the future would trigger the WTBs on, when it misleads the system into thinking that maintenance action is due.
I never found a reference in the pilots manuals. Is there any truth to this at all?