Module 8: Physiological and Human Factors
The aircraft is rarely the weakest link in a Part 107 operation — the human operating it is. This module covers ACS Task V.E, Physiology: the specific physical and mental conditions that degrade a remote pilot's judgment, reaction time, and ability to safely control an aircraft, and the FAA regulations that put the duty to self-assess those conditions squarely on the remote pilot. From alcohol and drugs to fatigue, stress, vision, and the physical toll of heat and cold, this module builds the self-assessment skill a remote pilot needs to know, honestly, whether they are fit to fly today.
Learning outcomes
- State the exact alcohol and drug rules under 14 CFR 107.27, including the 8-hour rule, the 0.04% BAC threshold, and why state-level cannabis legality does not change the federal prohibition.
- Explain how fatigue degrades pilot performance and apply the IMSAFE checklist before a flight.
- Describe how stress narrows attention and impairs decision-making, and reapply the PAVE, DECIDE, SRM, and CRM tools from Module 7 to manage a stress response.
- Explain the unaided-vision requirement of 14 CFR 107.31, correct visual scanning technique, and the phenomenon of empty-field myopia.
- Recognize the progression of heat stress and the effects of cold on manual dexterity and controller operation.
- Explain the self-assessment duty under 14 CFR 107.17 and correctly contrast it with the Part 61 medical certificate and BasicMed requirements that do not apply to Part 107.
Unlike a manned aircraft pilot certificated under 14 CFR Part 61, a Part 107 remote pilot does not carry an FAA medical certificate or rely on BasicMed. Instead, Part 107 places an ongoing, unmonitored self-assessment duty directly on the remote pilot under 14 CFR 107.17: know your own physical and mental condition, and don't fly if it would interfere with safe operation. This module builds every piece of knowledge that self-assessment actually requires, one physiological factor at a time.
The module opens with the clearest, most specific rule in this Area of Operation — the alcohol and drug prohibition under 14 CFR 107.27 — before moving into subtler, harder-to-self-diagnose factors: fatigue, which degrades performance long before a pilot consciously feels "too tired to fly," and stress, which physically narrows attention and degrades the very decision-making tools built in Module 7. It then covers the specific vision requirements behind the visual-line-of-sight rule, the physical toll heat and cold take on both judgment and fine motor control at the controller, and closes with medical fitness broadly — the capstone lesson that ties every factor in this module back to the single self-assessment duty in 14 CFR 107.17.
Every lesson is written to stand fully on its own, including full explanations of any Module 7 decision-making concept it draws on — you should not need to leave this module to understand any of it.
The 14 CFR 107.27 alcohol/drug rule, OTC and prescription medication impairment, and the cannabis legality question.
How fatigue degrades performance, why Part 107 has no numeric duty-time rule, and the IMSAFE checklist.
The physiology of stress, tunnel vision and channelized attention, and applying PAVE, DECIDE, SRM and CRM under pressure.
The 14 CFR 107.31 unaided-vision rule, visual scanning technique, and empty-field myopia.
Heat stress progression, cold's effect on manual dexterity at the controller, and hydration guidance.
The 14 CFR 107.17 self-assessment duty, contrasted clearly with Part 61 medical certificates and BasicMed.