Ryanair is challenging a court ruling that it unlawfully discriminated against a disabled man by charging him to use a wheelchair at an airport.
Bob Ross, who has cerebral palsy and arthritis, was charged stg£18 at Stansted Airport to take him from the check-in desk to the aircraft while travelling from London to France in 2002.
He successfully argued that the airline should have provided a wheelchair free of charge and the court ruled that Ryanair had acted unlawfully.
The court awarded Mr Ross, who is 54, €1,900 in compensation.
Ryanair has denied that it charges wheelchair passengers for assistance.
The airline says Mr Ross was not travelling with a wheelchair and was on his way to the south of France on a ticket worth stg£10.
It says Mr Ross paid the wheelchair cost to the service provider at Stansted and not to the airline.
Campaigners for the disabled claimed the judgement at London County Court last January was a landmark discrimination case.
The case is being heard at the Court of Appeal in London.
