>>Of course, the way this is worded, it doesn't specifically allow knives of less than 4"<<<br><br>Nor does it distinguish between carry-on and checked baggage... I may have violated that length restriction myself for checked baggage.. since I have no access to it, and it poses no threat to the airplane or personnel, it never occured to me that there would be such a restriction. I wonder if they'd really enforce it- why would they care?<br><br>In any case, I suspect that the "working" restriction on carry-on blades is much stricter. This may be one of those (many) cases where ambiguity in the policies or laws is deliberately preserved to, in effect, let them enforce anything they want.<br><br>Good link, thanks.<br><br>