The former Alaska Airlines pilot who admitted to flying two planes between California and Oregon in 2014 while heavily intoxicated has been sentenced to jail.

Officials announced on Wednesday that 63-year-old David Hans Arntson will serve a year and one day in federal prison after he pleaded guilty in February to one felony count for flying an aircraft while drunk.

Arntson, who retired after the incident, was also ordered to pay a $10,000 fine, KTLA reports.

Arntson was a pilot for Alaska Airlines for more than 20 years. Court documents stated that he suffered from alcoholism and kept it hidden during most of his career. He piloted flights under the influence for ‘at least a substantial portion’ of his career, the documents stated.

It is unknown how many flights Arntson flew while drunk.

On June 20, 2014, Arntson was pulled aside for a random drug and alcohol testing after piloting a flight from Portland, Oregon to John Wayne Airport in Santa Ana, California.

An airline technician performed two breathalyzers on Arntson and found that his blood alcohol concentration was 0.134 and 0.142, nearly three times the federal legal limit of 0.04 for pilots.

Arntson drove himself to a hospital where further tests were done showing that he was ‘substantially’ above the legal alcohol limit.

Officials said before flying the aircraft from Portland to Santa Ana, Arntson had piloted a flight from San Diego International Airport to Portland. About 240 passengers were on both flights, Boeing 737s.

‘This defendant was at the controls during hundreds of flights carrying innumerable passengers – undoubtedly under the influence of alcohol during many of those trips,’ U.S. Attorney Nicola T. Hanna said in a statement. ‘Fortunately, he was finally caught, and the risk to passengers was stopped.’

Arntson retired after the incident and the Federal Aviation Administration revoked his permit to fly a plane.

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