What is the maximum allowable blood alcohol concentration (BAC) for pilots?

The maximum allowable blood alcohol concentration (BAC) for pilots is set at 0.04%. This limit is enforced to ensure safety in aviation operations, recognizing that even small amounts of alcohol can impair judgment and operational capabilities. The 0.04% BAC threshold is significantly lower than what is permissible for driving in many jurisdictions, reflecting the critical importance of maintaining high standards of mental and physical performance when operating an aircraft. Pilots are expected to abstain from alcohol consumption for at least 8 hours before flying, further underscoring the aviation community's emphasis on safety. Maintaining a BAC of 0.04% or lower ensures that pilots can respond effectively to any in-flight situations that might arise.