FAR ninety-one dot two eleven and the oxygen rules that change at twelve thousand five hundred feet
FAR 91.211 requires supplemental oxygen at three altitude triggers: 12,500, 14,000, and 15,000 feet MSL.
PatternFAR 91.211 requires supplemental oxygen at three altitude triggers: 12,500, 14,000, and 15,000 feet MSL.
Pattern