There are many reasons why it may seem like sleep deprivation is a normal part of life. But when it comes to flying, this can be an unsafe condition.

Fatigue can be both physical and mental. Effects of fatigue include lack of concentration, irritability, and slower mental and skill-based performance. As with anything safety-related in aviation, when in doubt take the safe approach. This falls under the umbrella of risk management.

For example, if you’re wondering whether you are too tired to fly, stay on the ground.

You may have stayed up longer than normal the night before to complete a big project, and maybe you don’t feel fatigued, yet. It will catch up to you. Studies show that staying awake for too many consecutive hours without taking a rest will have the same effect as if you had too much alcohol to drink.

To avoid becoming fatigued, stick to a routine sleep schedule, ensure you stay hydrated by drinking plenty of water, maintain a well-balanced diet, and consult with your doctor if you persistently feel tired.

Fatigue is complex and varies from person to person. Know your body and how it reacts to the need for sleep. Respond to that need responsibly rather than trying to force a flight when you’re just not performing at your peak. It’s just like eating food when you’re hungry or drinking water when you’re thirsty. Your body will tell you what it needs, and it’s up to you to take the appropriate steps.

The FAA’s Pilot’s Handbook of Aeronautical Knowledge offers information about fatigue and other aeromedical factors in Chapter 17. Please, also review the FAA’s brochure on the topic of fatigue and take a look at the AOPA Air Safety Institute’s Fighting Fatigue Safety Spotlight for additional information on combating fatigue.