The TUC at 22,000 feet is recorded as what duration?

The TUC, or Time of Useful Consciousness, at 22,000 feet is understood to be approximately 45 seconds. This duration indicates the length of time a person can function effectively at that altitude before the onset of hypoxia, a condition caused by insufficient oxygen.

At 22,000 feet, the atmospheric pressure is significantly lower than at sea level, leading to reduced oxygen availability. In emergency situations, understanding TUC is critical for flight crews and individuals in high-altitude environments. The 45-second duration reflects the physiological limits of the body in terms of maintaining cognitive and motor functions, allowing for enough time for appropriate actions, such as initiating descent to a safer altitude or deploying supplemental oxygen if needed.

The other durations, while they might pertain to different altitudes or conditions, do not accurately represent the TUC specifically at 22,000 feet, illustrating the importance of altitude-specific data in emergency response training and protocols.