She was escorted off the Boeing 787 Dreamliner plane in October and taken into custody as around 300 passengers were waited for takeoff. Tests showed she had 71 microgrammes of alcohol in 100 millilitres of breath. The legal limit under aviation rules is 9mg.

Manchester magistrates court heard Rosehill, from Chicago, had got drunk the previous evening after going to to a "bring your own booze" restaurant with friends during a stopover in Manchester.

It is thought she had been drinking wine before having whisky from her hotel mini-bar at 2am.

She admitted performing an aviation function whilst over over the prescribed limit under the Railways and Transport Safety Act 2003 and was given a £140 fine with £85 legal costs and a £30 victim surcharge.

The senior stewardess, who has worked with American Airlines for 29 years, is currently suspended on full pay and faces a disciplinary hearing in the US when she returns.