CFM CFM56-2 - HPT Rotor Blades Possible Defects

EFFECTIVITY
ALL CFM56 ENGINES
CFMI PROPRIETARY INFORMATION
CFM56-ALL TRAINING MANUAL
HIGH PRESSURE
TURBINE
BORESCOPE
INSPECTION
Page 144
Sep 03
HIGH PRESSURE TURBINE (HPT)
(ALL) :
Possible defects.
The following defects may be observed and should be
assessed with the serviceability limits in the AMM.
Trailing edge :
- cracks.
Tip area :
- cracks.
- bent, curled, or missing pieces.
- tip trailing edge wear.
Blade platform :
- nicks and dents.
- cracks.
Concave and convex airfoil surfaces :
- cracks.
- distortion.
- burning.
Cooling holes :
- cracks.
- plugging.
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