Calculation depends on engine model, rating, environmental correction and approved monitoring method.
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ENGINES & PROPULSIONADVANCED
EGT margin
EGT margin Abbreviation · exhaust gas temperature margin Synonym
The difference between an engine exhaust-gas-temperature limit and the temperature required to produce a defined rated thrust.
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How the term is used
EGT margin is a performance-health indicator. As engine efficiency deteriorates, more temperature may be required for the same thrust, reducing the available margin.
Where you may encounter it
Engineering and powerplant teams use trends to support maintenance planning and shop-visit decisions.
Do not compare raw EGT values between flights or engines without the approved corrected method and operating context.
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