From FAA Part 107 study guide:
Remote Pilot – Small Unmanned Aircraft Systems Study Guide
Physiological Factors (Including Drugs and Alcohol) Affecting Pilot Performance
14 CFR part 107 does not allow operation of small UA if the remote PIC, the person manipulating the controls, or Visual Observer (VO) is unable to safely carry out his or her responsibilities. It is the remote PIC’s responsibility to ensure all crewmembers are not participating in the operation while impaired. While drug and alcohol use are known to impair judgment, certain over-the-counter (OTC) medications and medical conditions could also affect the ability to safely operate a small UA. For example, certain antihistamines and decongestants may cause drowsiness. We also emphasize that part 107 prohibits a person from serving as a remote PIC, person manipulating the controls, VO, or other crewmember if he or she:
- Has consumed any alcoholic beverage within the preceding 8 hours
- Is under the influence of alcohol
- Has a blood alcohol concentration of .04 percent or greater
- Is using a drug that affects the person’s mental or physical capabilities.
There are certain medical conditions, such as epilepsy, may also create a risk to operations. It is the remote PIC’s responsibility to determine that their medical condition is under control and they can safely conduct a small UA operation.
Physiological/Medical Factors that Affect Pilot Performance
Important medical factors that a pilot should be aware of include the following:
- the effects of alcohol and drugs