Max difference between EGTs on CFM563B
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Max difference between EGTs on CFM563B
Can any body tell me if there is still a max difference of 50 degrees celsius between engines 1 and 2 (CFM56 3B2) at idle RPM. I recall that a long time ago Boeing had a maximum limitation of 50 degrees between EGTs at idle RPM.
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While I'm not aware of a specific limit on ΔEGT, 50° does seem like a lot and Boeing perhaps uses this as a flag to check for the cause.
However, if both engines are otherwise behaving normally, and there's no obvious external cause (e.g. one engine ingesting GPU exhaust, ...) then I wouldn't be concerned.
However, if both engines are otherwise behaving normally, and there's no obvious external cause (e.g. one engine ingesting GPU exhaust, ...) then I wouldn't be concerned.
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Check your other parameters as well, i.e FF and N2 speed. these are indicative of a problem that manifests with a TGT increase.
Also bare in mind, which engine is at fault, one could be 25 deg low and other 25 deg high.
Check your cruise TGT and TO TGT.
Also bare in mind, which engine is at fault, one could be 25 deg low and other 25 deg high.
Check your cruise TGT and TO TGT.
