aeromedical factors

Traffic Pattern Aug 27, 2026

Hypoxia, Time of Useful Consciousness, and Why the Most Dangerous Symptom Is the One That Tells You Everything Is Fine

Hypoxia's most dangerous symptom is euphoria - the feeling that everything is fine. Learn the FAA oxygen rules, TUC numbers, and why you must act before you feel impaired.

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Traffic Pattern Aug 24, 2026

Federal Aviation Regulation Ninety-One Point Two Eleven, Supplemental Oxygen, and the Twelve-Five, Fourteen, and Fifteen Thousand Foot Rules That Keep Your Brain Working Where the Air Won't

FAR 91.211 requires supplemental oxygen at 12,500, 14,000, and 15,000 feet - here's what each rule means and why hypoxia is so dangerous.

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Traffic Pattern Jul 20, 2026

The Oxygen Rule, Ninety-One Two Eleven, and Why Your Body Stops Reading the Regulation at Ten Thousand Feet

FAR 91.211 sets oxygen rules at 12,500, 14,000, and 15,000 feet - but your body needs oxygen far lower. Here's the difference.

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