RIB 1
EXAMPLE OF A BURN THROUGH HOLE WHICH
HOLE
EXAMPLE OF AN AXIAL CRACK
CONNECTED TO A 0.50 INCH
(12.70 mm) CIRCUMFERENTIAL
EXAMPLE OF CRACKS
ACROSS 3 PANELS
EXAMPLE OF A CRACK
ACROSS MORE THAN
3 PANELS
DOME PANEL 1 PANEL 2 PANEL 3 PANEL 4
BAND
GMM-1077358-04-B
Combustion Chamber and High Pressure Turbine Nozzle Guide Vanes Borescope Inspection Figure 606 (Sheet 6)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
DOME PANEL 1 PANEL 2 PANEL 3 PANEL 4 BAND
INNER LINER CIRCUMFERENTIAL CRACKS GMM-1077361-01-B
Combustion Chamber and High Pressure Turbine Nozzle Guide Vanes Borescope Inspection Figure 606 (Sheet 7)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
BAND
PANEL 2 PANEL 4
OUTER LINER CIRCUMFERENTIAL CRACKS GMM-1077359-01-B
Combustion Chamber and High Pressure Turbine Nozzle Guide Vanes Borescope Inspection Figure 606 (Sheet 8)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
EXAMPLE OF A CRACK AT THE IGNITER HOLE
IGNITER HOLE
EXAMPLE OF 3 CRACKS ACROSS ONE PANEL
EXAMPLE OF A BURN THROUGH HOLE WHICH IS LESS THAN 2 TIMES THE AREA OF A DILUTION HOLE
EXAMPLE OF A CRACK ACROSS 4 PANELS
EXAMPLE OF A
MISSING OVERHANG
DOME PANEL 1 PANEL 2 PANEL 3 PANEL 4 PANEL 5 BAND
GMM-1077360-02-C
Combustion Chamber and High Pressure Turbine Nozzle Guide Vanes Borescope Inspection Figure 606 (Sheet 9)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
Combustion Chamber or HPT Nozzle Guide Vanes - Inspection
_________________________________________________________
(d)
The inner and outer liners, examine the rear section carefully.
(e)
The HPT nozzle guide vanes.
S 216-028-C00
(5) The combustion chamber surfaces.
(a)
All areas of discolorization are serviceable.
(b)
All quantities of carbon on the surface are serviceable.
(c)
All areas of chips, spalling, fretting and flaking in the thermal barrier coating are serviceable.
S 216-066-C00
(6) The dome assembly
NOTE: The dome assembly includes the spectacle plate,
____
deflector, sleeve and venturi.
(a)
There is no maximum limit to the distortion of the deflector or the sleeve.
(b)
Radial cracks in the spectacle plate 1) All cracks are permitted if they are not connected and not more than 2.0 inches (50.8 mm) in length.
2) A maximum service extension of 25 cycles is permitted if the cracks are not connected and up to 2.5 inch
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