What is the recommended action for a pilot experiencing hypoxia?

The recommended action for a pilot experiencing hypoxia is to descend to a lower altitude where oxygen levels are sufficient. At higher altitudes, the partial pressure of oxygen decreases, which can lead to hypoxia, a condition where the body is not getting enough oxygen. By descending to a lower altitude, the pilot can rapidly access a higher partial pressure of oxygen, thereby alleviating the symptoms of hypoxia.

Using supplemental oxygen at the current altitude is also an effective response, particularly for those who are trained and equipped to handle it. However, in acute situations where immediate relief is necessary, descending to a safer altitude is often more efficient.

While increasing altitude is likely to exacerbate hypoxia, and alerting air traffic control is a prudent measure to ensure safety and receive assistance, the primary and most immediate corrective action is to descend to an altitude where oxygen levels are adequate.