0.375
0.062
DIAMETER ALUMINUM RADIUS
MILLIMETERS IN PARENTHESES.
G-M56-MM-0213(1)-02-C High Pressure Compressor Rotor Borescope Inspection Figure 605 (Sheet 2)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
HPC Blades (1st- thru 9th-Stages) - Inspection
______________________________________________ S 216-018-C00
(7) Examine the rotor blades for these items: NOTE: The depth of a defect such as a nick is measured along the
____ axis of the damage unless stated differently.
If you find damage, you must examine all the remaining HPC stages and the combustion chamber.
(a) Cracks are not serviceable.
4TH THRU 9TH-STAGE BLADE LOCKS
C
G-M56-SM-1495(1)-00-B
High Pressure Compressor Rotor Borescope Inspection Figure 605 (Sheet 3)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
0.30 0.10
(7.62) (2.54)
AIRFOIL ROOT RADIUS AREA
HPC ROTOR BLADE
TRANSVERSE AXIS
NOTE: ALL DIMENSIONS ARE IN INCHES WITHGMM-1095620-04-A
MILLIMETERS IN PARENTHESES.
High Pressure Compressor Rotor Borescope Inspection
Figure 605 (Sheet 4)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
0.10 (2.54) TIP
MISSING TIP CORNER
NICK
NICK EDGE CONTOUR
DEPTH
DEPTH NOTE: ALL DIMENSIONS ARE IN INCHES WITHGMM-1121724-01-A
MILLIMETERS IN PARENTHESES.
High Pressure Compressor Rotor Borescope Inspection
Figure 605 (Sheet 5)
E62308
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
HPC Blades (1st- thru 9th-Stages) - Inspection
______________________________________________
(b)
Missing or chipped erosion coating found on stages 1 through 9 compressor blades in any amount is serviceable.
(c)
Nicks, dents and scratches on the airfoil root radius. 1) No maximum limit if the damage is less than 0.003 inch
(0.10 mm) in depth.
2) No scratches that are parallel to the platform are permitted.
(d) Tears, nicks, dents and missing material on the leading and trailing edge of stages 1-9 compressor blade found in the lower 25% of the airfoil (but not in the root radius). 1) Tears are not serviceable. 2) No maximum number of nicks, dents and missing material if
the damage is less than 0.03 inch (0.76 mm).
3) A maximum service extension of 10 cycles or 25 hours is permitted if the damage is more than 0.03 inch (0.76 mm) but less than 0.08 inch (2.03 mm).
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