Alcohol, Medical Fitness, and Emergencies

Part 107 doesn't have a single "pilot fitness" rule. It has three separate ones, alcohol and drugs, medical condition, and in-flight emergency authority, each answering a slightly different version of the same underlying question.

Alcohol and drugs: the standard is stricter than "not drunk"

14 CFR §107.27 prohibits acting as a remote pilot in command, or manipulating the flight controls, while under the influence of alcohol or drugs to a degree that affects safety, or within a set period after consuming alcohol, mirroring the standard manned aviation uses. "I feel fine" isn't the test; the rule sets an objective standard independent of the pilot's own assessment of their state.

Medical condition: it's about the specific flight, not a blanket certificate

14 CFR §107.17 prohibits operating as a remote pilot with a known medical deficiency, or while taking medication, that would interfere with the safe operation of the aircraft. Unlike manned aviation's formal medical certificate system, Part 107 doesn't require a medical exam or a standing certificate; it requires the pilot to make an honest, ongoing judgment about whether a current condition or medication interferes with safe operation of this flight, right now.

In-flight emergency: the rule that lets other rules bend

14 CFR §107.21 addresses what happens when an emergency requires deviating from Part 107's other operating rules to the extent necessary to meet that emergency. This isn't a loophole; it's a recognition that a genuine emergency, a lost link, a mechanical failure, an unexpected hazard, can require a response that the normal operating rules didn't anticipate, and the regulation explicitly permits that deviation rather than leaving a pilot choosing between following the rule and responding to the emergency.

What connects all three

Alcohol and drugs, medical condition, and in-flight emergency authority all center on the same real question underneath the regulatory language: can this pilot, in this specific moment, actually exercise sound judgment and control. Two of the rules restrict when a pilot may fly at all; the third defines how much flexibility a pilot has once something goes wrong mid-flight. Exam scenarios on this cluster usually test whether a candidate can tell which of the three is actually in play, rather than reaching for the same answer regardless of what the scenario describes.

The full regulatory language and drills for this area are in the handbook.