Symptoms
Exhaust gas temperature above normal, increased SFC, possibly reduced stall margin.
Probable causes
- Compressor/turbine blade deterioration
- Bleed valve not sealing
- Dirty fuel nozzle
- EGT sensors drifting
Solution
Carry out a borescope inspection and a compressor water wash, check bleed valves and fuel nozzles, and check EGT sensor calibration in accordance with the CFM56/LEAP AMM.
The information on this page is general guidance. It does not replace the manufacturer’s manual or the work of a qualified technician: before any intervention, always check procedures, tightening torques and safety requirements in the official documentation of the machine.
Field experiences
No experience has been published for this fault yet. If you have dealt with it, tell us how you solved it: photos and drawings help whoever faces the same situation.
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