Originally Posted by
Whirlygig
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"Can I see your boarding pass please madam! (Sadly I am no longer of an age where I get called "Miss"). "I don't have one, it's a private flight". "Can't go through without a boarding pass". "It's a private flight" etc etc.
So print yourself a few generic boarding passes and carry one in your handbag/flightbag - that's what I used to do for a "crew id card" and it's always worked.