At which altitude may there be a transient OBOGS FAIL indication due to rapid decompression?

The transient OBOGS (On-Board Oxygen Generation System) FAIL indication due to rapid decompression is relevant around 20,000 feet MSL. This altitude can present conditions where the system may not adequately provide the necessary oxygen due to the sudden drop in pressure associated with rapid decompression incidents. At this altitude, the effects of altitude can lead to a temporary failure indication as the system might struggle to adjust to the sudden change in environmental conditions.

Adjustments for the oxygen concentration and flow rate in response to altitude changes can be challenging at 20,000 feet, resulting in a potential failure alert. Understanding this phenomenon is crucial for pilots to ensure they take appropriate actions during such emergencies, even if the system might be functioning correctly after the initial failure indication has passed.