What are the oxygen requirements for part 91 at and above 12,500 feet?

The correct answer is based on the regulations set forth in Part 91 of the Federal Aviation Regulations, which govern the operation of aircraft in the United States. Specifically, at altitudes of 12,500 feet and above, there are requirements concerning the use of supplemental oxygen to ensure the safety of those on board.

At altitudes of 12,500 feet, the pressure of oxygen in the air decreases, which can lead to hypoxia if a person is exposed to such conditions for an extended period. According to Federal Aviation Administration (FAA) guidelines, the minimum requirement is that if an aircraft is flying at that altitude for more than 30 minutes, the pilot in command and any crew members must use supplemental oxygen. This rule is in place to mitigate the risks associated with hypoxia and ensure that crew members are fit to operate the aircraft safely.

However, it is essential to note that passengers do not have the same requirements unless specified differently in a flight operation plan or if the altitude exceeds 14,000 feet. Therefore, pilot and crew oxygen requirements become essential to ensure operational safety, which makes it imperative to follow the guidelines established in Part 91.

Understanding these regulations highlights the importance of careful adherence to safety protocols in aviation, especially at high