The pilot pleaded guilty to drunk in the municipal court of Uxbridge on Thursday.
A Japan Airlines pilot who was arrested in Britain shortly before a flight for being drunk was nearly 10 times over the legal blood alcohol limit for a pilot, London police said. He had been scheduled to serve on a flight to Tokyo, which took off just over an hour late.
According to BBC, the 42-year-old first officer was found to have 189mg of alcohol per 100ml of blood in his system - whereas the legal limit for pilots is only 20mg.
Jitsukawa was taken into custody on November 29, appeared in court.More news: Rihanna shuts down Donald Trump over his 'tragic' rallies
In a statement, the airline said: "The company sincerely apologises to the passengers and to all affected by the employee's actions".
According to the Kyodo News Agency, before the bus driver alerted authorities at Heathrow, the pilot had passed the airline's own breath test.
The co-pilot acknowledged he drank about two bottles of wine and a pitcher of beer the previous night, NHK said.
After over an hour's delay, the flight departed under the charge of the two remaining pilots.More news: Target reveals Black Friday deals and skip-the-line option
Japan Airlines have issued an apology and pledged to "implement immediate actions to prevent any future occurrence", adding that "safety remains our utmost priority".
Japan's transport minister has said he will tighten rules about alcohol consumption by flight crews after a series of incidents in the industry.
Other incidents of drunkenness among crew members have drawn scrutiny to the industry.
Following the arrest, Japan Airlines temporarily doubled the time where pilots aren't allowed to consume alcohol from 12 hours to 24 hours before a flight.More news: Floyd Mayweather to fight kickboxer Tenshin in Japanese fighting league RIZIN