What is the maximum operating altitude for a Cessna 172?

The maximum operating altitude for a Cessna 172 is indeed 14,000 feet pressure altitude when supplemental oxygen is used. This altitude is determined in accordance with FAA regulations, which stipulate that pilots must carry supplemental oxygen for any flight above this altitude to ensure adequate oxygen levels for both the pilot and passengers.

Flying at or above 14,000 feet can lead to hypoxia, a condition that occurs when the body does not receive enough oxygen, which can impair cognitive function and physical capabilities. Therefore, equipping the aircraft with an oxygen system and understanding oxygen requirements at increased altitudes is essential for safety.

The other altitude options are either below the maximum operating limit or do not take into account the requirement for supplemental oxygen, all of which contribute to the specific operational limitations of the Cessna 172.