Originally Posted by
Paolo de Angelis
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Example: CFM56 3C1, EGT stays at 940° for 15 seconds.
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No Problem!
The Maintenance Manual said:
On airplanes with EGT transitory overtemperature capability or Service Bulletin, no maintenance action is necessary when the maximum EGT is between 930 and 940 degrees C for less than 20 seconds when takeoff or go around power is set. Refer to Boeing Service Letter 737-SL-72-006 for more information.
Originally Posted by
Paolo de Angelis
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Is it still safe to fly like that? What if instead of 940° you reached 960°?
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Continue flight but ...
The Maintenance Manual said:
If the EGT exceedance was 5 seconds or more in Area C you must remove the engine for an overtemperature inspection before the next 15 cycles.
(15 Sec with 960° C is Area C)