In reply to john morrissey:
Really? I always take ropes in hand luggage and never had a problem.
A few people have said might/probably and other vague comments, but have provided zero evidence that they have had an issue with ropes in hand luggage.
I have flown to the alps from norway via amsterdam, and to greenland from norway via copenhagen with 2 60m ropes in my hand luggage without any issue.
But if someone has proof that it could go wrong, I'd like to know before I loose my ropes. I'm also curious to know what risk I pose with these ropes.