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5063
In accordance with 14 CFR part 91, supplemental oxygen must be used by the required minimum flightcrew for that time exceeding 30 minutes while at cabin pressure altitudes of
| * | A) 12,500 feet MSL up to and including 14,000 feet MSL. |
| | B) 12,000 feet MSL up to and including 18,000 feet MSL. |
| | C) 10,500 feet MSL up to and including 12,500 feet MSL. |
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