Make it a requirement for commercial airlines to install an ignition interlock device for aircraft operators to use before starting the engines.
Commercial airline pilots and co-pilots are responsible for the lives of millions of people every day. According to the International Civil Aviation Organization (ICAO), there are over 3 billion air travelers each year, nearly 700 million alone in the United States.
Narrow body jets carry between 150-200 people each flight.
Wide body jets carry between 250-500 people each flight.
It is illegal for them to have a BAC over .04; however, there should be zero risk to passengers aboard each flight that their "driver" may be under the influence.
It should be the right of each passenger to know they are flying with a sober operator.