Ryanair has been at the centre of the news all week after having to cancel 2000 flights between now and the end of October.

News emerged overnight though that the issues could be far deeper than just sorting some holidays that hadn't been taken and the pilots who work for them are ramping up the tension.

The pilots who are at the centre of this dispute have sent a letter that clearly states their position and they could opt for "work to rule"...

This letter from pilots groups to #Ryanair is pretty serious. #ryanaircancellations pic.twitter.com/Duzm0SrDh8

— Tom Lyons (@TomLyonsBiz) September 20, 2017

Although the cancellations have all started because of holiday days that needed to be taken, this is quickly escalating into something much bigger...

Ryanair pilots have given airline until Friday to respond to demands that challenge its whole business model. https://t.co/EETiKG7g99

— Fionn Davenport (@fionndavenport) September 20, 2017

Ryanair are going to have serious issues trying to turn this one around and more cancelled flights look very likely at this stage...

This video explains the issue pilots are having...

Doesn't look good.

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