A pilot has revealed the one warning on planes you should never ignore, as it can cause “catastrophic consequences.”

Those of us who have travelled by air will be familiar with the warning sign in the on board bathroom advising not to flush anything other than toilet roll down the bowl.

American Airlines pilot Captain Steve regularly shares an insight into his life above the clouds on TikTok, also offering tips and tricks to passengers along the way. His latest piece of advice left travellers…