What is the maximum blood alcohol concentration at which a crewmember may not act?

What is the maximum blood alcohol concentration at which a crewmember may not act?

• A. Less than .04 percent by weight
• B. .08 percent
• C. .05 percent
• D. .02 percent

Answer: (A)

Alcohol impairs thinking, judgment, coordination, and reaction time, which are critical for safely operating a balloon. Regulations set a clear limit: you must not act as a crewmember if your blood alcohol concentration reaches 0.04 percent by weight or higher. In practical terms, the highest BAC at which you are still permitted to act is anything below 0.04 percent; once you hit 0.04 or more, you may not act. The option stating less than 0.04 percent best reflects this boundary. Values at or above 0.04 (such as 0.05 or 0.08) would disqualify you, while a very low value like 0.02 percent would be well below the limit.

Alcohol impairs thinking, judgment, coordination, and reaction time, which are critical for safely operating a balloon. Regulations set a clear limit: you must not act as a crewmember if your blood alcohol concentration reaches 0.04 percent by weight or higher. In practical terms, the highest BAC at which you are still permitted to act is anything below 0.04 percent; once you hit 0.04 or more, you may not act. The option stating less than 0.04 percent best reflects this boundary. Values at or above 0.04 (such as 0.05 or 0.08) would disqualify you, while a very low value like 0.02 percent would be well below the limit.