While there are regulations that govern when pilots should use supplemental oxygen, experts say it’s more important to focus on how you feel in the cockpit, rather than the altitude. “Everyone is different and some people need oxygen [at a lower altitude] and some people can tolerate a little bit higher,” said Dr. Brent Blue, a senior aviation medical examiner, in this May 2017 edition of NBAA Flight Plan.
International Business Aviation Council Ltd.