Murder by Fire Axe has appeared again. And why not - it is almost the ideal weapon for a single handed assailant. So why carry it? Has anyone ever needed one? Remove it and be happier at having CC as second person when needed.
It seems to me you either trust the cabin crew to have access to the flight deck, or you don't. Cabin crew bring food, coffee, tea to the pilots, which could easily be drugged or poisoned.