Two pilots were behind bars over claims they were drunk at the controls of a flight with 250 passengers on board.

Imran Zafar Syed, 37, and Jean Franco Perrault, 39, were hauled off the flight they were due to pilot as it was about to take off from Glasgow International Airport on Monday.

The Air Transat service was scheduled to depart at 1pm, destined for Toronto in Canada.

Staff are reported to have raised concerns about the pair’s behaviour amid claims they were “impaired through alcohol.”

They were charged with breaching Section 93 of the Railway and Transport Safety Act 2003 when they were led in to the dock at Paisley Sheriff Court today in handcuffs.

Both men appeared in the dock separately, wearing white, open-ended shirts, represented by Union-appointed solicitors.

Procurator Fiscal depute Fiona Holligan said the Crown opposed bail for both men, who are thought to be a flight risk.

Sheriff Susan Sinclair remanded them in custody and continued the case against the for prosecutors to investigate further.

A spokeswoman said: “Police Scotland can confirm two men aged 39 and 37 years have been arrested in relation to being allegedly impaired through alcohol under the Railway and Transport Safety Act 2003 (Section 93).”

The Canadian airline confirmed the arrest of its employees and said the flight had been reschedules and passengers put up in hotels.

A spokesman said: “Air Transat has learned of the arrest on July 18 of two crew members assigned to its Glasgow-Toronto flight.

“We will await the results of the investigation and judicial proceedings before commenting on the matter. The safety of our crews and passengers is, and will remain, a top priority at Air Transat.”