(CNN) Nervous fliers, stop reading now.

A Japan Airlines pilot has admitted to failing a breath test shortly before he was due to fly from London Heathrow to Tokyo, the UK's Press Association reports.

Katsutoshi Jitsukawa, 42, had almost 10 times more than the legal permitted amount of alcohol in his bloodstream when he was arrested, the Metropolitan Police said.

Katsutoshi Jitsukawa will be sentenced on November 29.

At Uxbridge Magistrates' Court Thursday, the pilot pleaded guilty to being over the alcohol limit.

Japan Airlines flight JL44 was due to take off just 50 minutes after tests showed that First Officer Jitsukawa had 189 mg of alcohol per 100 ml of blood in his body.

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