Flex Temperature
Definition
An assumed temperature higher than actual used to derate engine takeoff thrust. By telling the FADEC it is hotter, the engine produces less thrust, reducing wear while maintaining adequate performance for the conditions.
Why Flex Temperature Matters for Pilots
Performance planning directly affects flight safety. Knowing how Flex Temperature works helps you calculate whether a takeoff or landing is safe for given conditions. FAA and EASA exams frequently test performance concepts, and examiners expect you to apply Flex Temperature to real-world scenarios during oral exams and checkrides.
Exam Tip
This concept is commonly tested in performance-related questions on FAA and EASA exams. Make sure you can explain Flex Temperature in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
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