► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />Airbus is campaigning for economy class seats on long haul flights to be a minimum of 18 inches. But increasing passenger comfort could mean less revenue for airlines. Jane Wild reports from the Farnborough air show.<br /><br />► FT Business: http://bit.ly/1KUK08s<br /><br />► Lex: http://bit.ly/1I14JZF<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes