Washington (CNN) -- A pilot in Minnesota who was preparing to fly a commercial jet halfway across the country was arrested after a security agent smelled alcohol on him and he failed a preliminary breath test, airport police said Friday.

CNN: Pilot arrested after security agent smells alcohol

Birmingham Crown Court heard Dhesi failed a roadside breath test after the crash and was found to have 46 micrograms of alcohol in 100 millilitres of breath - above the legal limit of 35 micrograms.

BBC: Driver Jasminder Singh Dhesi jailed over M5 fatal crash

The exercise was conducted in 2003 through the voluntary completion of a questionnaire by drivers who had failed or refused a breath test or who when tested passed on amber which indicated the presence of alcohol in their breath.

BBC: A typical drink driver is a man, the study says