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Water intake in severe heat stress

Remote Pilot (Part 107) practice question 6 of 20 on Operations / Physiology. ACS element UA.V.E.K1 · difficulty: standard. Want to answer it in a timed quiz? Use the Remote Pilot (Part 107) practice mode.

Question bank updated 2026-09-22

QUESTIONA remote pilot is conducting a long operation under severe heat stress conditions. According to the Remote Pilot Study Guide, how much water should the pilot drink to help prevent heatstroke?

  1. AOne pint per hour
  2. BOne quart per hour
  3. COne quart every four hours, when thirsty
Show the answer and explanation

Correct answer: B. One quart per hour

  • A — incorrect One pint per hour is the study guide's figure for moderate heat stress conditions, not severe conditions.
  • B — correct The study guide states that individuals should drink one quart per hour for severe heat stress conditions, which is below the 1.2 to 1.5 quarts per hour the body can normally absorb.
  • C — incorrect The study guide recommends drinking at frequent intervals whether thirsty or not, and the severe-conditions rate is one quart every hour, not every four hours.

BACKGROUND

Heatstroke is a condition caused by any inability of the body to control its temperature. Its onset may be recognized by the symptoms of dehydration, but it has also been recognized only upon complete collapse. The Remote Pilot Study Guide recommends carrying an ample supply of water and drinking at frequent intervals, whether thirsty or not. The body normally absorbs water at 1.2 to 1.5 quarts per hour. Individuals should drink one quart per hour under severe heat stress and one pint per hour under moderate heat stress.

STUDY TIP

Pair the two rates in memory: quart per hour for severe heat, pint per hour for moderate heat.

KEY POINTS

  • Severe heat stress: drink one quart of water per hour.
  • Moderate heat stress: drink one pint per hour.
  • Drink at frequent intervals whether thirsty or not; heatstroke can appear only at collapse.

SOURCES

  • remote_pilot_study_guide.txt ch9 "Heatstroke"
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MORE ON OPERATIONS / PHYSIOLOGY

SkyDrill is not affiliated with the FAA. This is an original practice item based on 14 CFR part 107, 14 CFR part 89, and the FAA Remote Pilot – Small UAS Study Guide (FAA-G-8082-22). Regulations and handbooks are revised; confirm details against the current edition.