PILOT ARCADE ALL MISSIONS

AEROMEDICAL / MISSION 13

Hypoxia Recognition & Response

TYPES · WARNING SIGNS · RISK FACTORS · IMMEDIATE ACTION

NORMAL OXYGEN DELIVERY PATHWAY

Where can oxygen delivery fail?

Select a stage to see how oxygen delivery can fail.

TYPE 1

Hypoxic hypoxia

AFFECTED STAGEAVIATION EXAMPLESTYPE-SPECIFIC RESPONSEMEMORY CUE

RECOGNIZE

Performance changes may appear first

  • Impaired judgment, memory, alertness, coordination, or calculation
  • Headache, dizziness, drowsiness, euphoria, or unusual belligerence
  • Reduced night vision can occur at lower cabin altitudes

FACTORS THAT INCREASE RISK

Some conditions can make hypoxia affect you sooner

  • Fatigue, illness, anxiety, heat, cold, and physical activity
  • Alcohol and some medications
  • Rate of ascent, exposure time, and individual physiology

SUSPECT IMPAIRMENT?

Act immediately

  1. Use supplemental oxygen when hypoxia is possible.
  2. Check oxygen and pressurization equipment.
  3. Address the suspected cause.
  4. Descend or land when appropriate and follow the aircraft checklist.

PILOT QUICK REVIEW

The four types at a glance

HYPOXIC

Too little oxygen transfers through the lungs.

HYPEMIC

Blood cannot carry enough usable oxygen.

STAGNANT

Oxygenated blood is not circulating adequately.

HISTOTOXIC

Cells cannot properly use delivered oxygen.

TRAINING SCOPE: Symptoms vary and impaired judgment can make self-recognition unreliable. Treat suspected hypoxia promptly. Follow the aircraft’s approved oxygen, pressurization, and emergency procedures and current FAA guidance.

FAA Hypoxia EducationFAA AIM: Medical Facts for Pilots

FREE AVIATION HYPOXIA PRACTICE

Recognize hypoxia before performance deteriorates

Learn how oxygen moves from the atmosphere to the body’s cells, then practice identifying likely hypoxia hazards and immediate pilot responses. This aeromedical trainer complements the Pilot Arcade Oxygen Requirements Trainer, which focuses separately on the legal thresholds in 14 CFR §91.211.

Four types

Compare hypoxic, hypemic, stagnant, and histotoxic hypoxia by locating the failed part of the oxygen-delivery pathway.

Signs and risks

Review cognitive, behavioral, and physical warning signs alongside conditions that can reduce altitude tolerance.

Corrective action

Practice selecting a cause-appropriate response: use oxygen when indicated, address the source, and descend or land when appropriate.