Full throttle height (also referred to as "Critical Altitude") is ..
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Sorry - wrong.
Full throttle height refers to a supercharged engine. It is the height where the throttle will be fully open for a given set power (rpm and MAP).
Critical altitude refers to a turbocharged engine. It is the height, with the throttle in any position, where the wastegate becomes fully closed. In this application, whether ground boosted or altitude boosted, the throttle will be fully open at sea level take off conditions, and so full throttle height cannot apply.
