FFF
As an aside, am I right in thinking that, unlike JARs, the FARs do carry a specific requirement to carry an up-to-date chart?
Not for little planes under Part 91; there is a reg in part 91 which specifically requires large planes and turbojets to carry a chart (together with spare D cell batteries or something like that).
Of course if you don't have a chart and get lost and have an accident I suppose they can always bust you for being 'careless and reckless', which is the catch all reg if they really want to hang you out.