What are the negative effects of an aircraft flown with a sea-level cabin altitude?

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Quizplus · Accepted Answer

Cabin pressurization creates an artificial atmospheric pressure inside the aircraft, known as cabin altitude. The cabin altitude can be adjusted from sea level to a maximal differential (usually 5000-6000 ft) depending on patient requirements and aircraft operations. An aircraft flown with a sea-level cabin altitude will not experience any of the effects of high altitude, but this could have a negative effect on the operation of the aircraft. Because of the pressure differential, the aircraft might need to be flown at a lower flight altitude to allow for the sea-level cabin pressurization. This lower flight altitude might increase the fuel burn (possibly requiring a fuel stop), slow the aircraft and thus increase transport time, and expose the aircraft to more severe weather concerns. Documentation of the cabin altitude during the patient transport should be included in the patient transport record. If for any reason flight cabin altitude may compromise the patient's condition, medical control should be contacted.

What Are the Negative Effects of an Aircraft Flown with a Sea-Level