34.32 Alcohol and Drugs

34.32.2 Explain the effects of alcohol on pilot performance.

Alcohol is a central nervous system depressant. It affects brain function and can significantly reduce a pilot’s ability to operate an aircraft safely.

Alcohol may impair:

• Judgement and decision-making.

• Reaction time.

• Concentration and attention.

• Situational awareness.

• Memory and information processing.

• Balance and coordination.

• Vision and perception.

• Fine motor control.

Alcohol also tends to reduce inhibitions and increase confidence, which may cause a pilot to underestimate risk or accept situations they would normally avoid.

These effects are particularly dangerous during periods of high workload, unexpected events or emergencies, when accurate judgement and rapid responses are essential.

The effects of alcohol may continue after the alcohol has disappeared from the bloodstream. Residual effects associated with drinking, including fatigue, dehydration, poor sleep, headache and reduced mental performance, may continue for many hours.