Originally Posted by
Silvaire1
As far as I know there is no requirement under FAA rules to log time, although in the event of an incident you may need to prove compliance with whatever currency and BFR requirements apply. Flying culture in relation to logging time is geared towards young professional pilots hoping to built time, and hoping to document every single minute flying. For an experienced pilot hopping into his puddle jumper its actually not necessary, despite the UK/Euro compulsion in this regard.
Again, the FAA seem to disagree.
Neither community require actual times to be logged (although most people elect to), just the duration.