EFFECTIVITY
ALL CFM56 ENGINES
CFMI PROPRIETARY INFORMATION
CFM56-ALL
TRAINING MANUAL
COMBUSTION
CHAMBER
BORESCOPE
INSPECTION
Page 124
Sep 03
COMBUSTION SECTION
(-5B, -7B) :
Inspection of DAC chamber after birdstrike/FOD.
Insert a rigid probe into the left igniter position and
examine the position of the fuel nozzle tips in relation to
the bore of the inner and outer ferrules to make sure they
are in the bore of the ferrules.
Inspect the tip of the fuel nozzle that is counterclockwise
from the igniter.
Turn the borescope probe until the tips of the second fuel
nozzle, clockwise from the igniter are visible.
Inspect the other fuel nozzles visible from the igniter.
Insert the probe in the right igniter and then the other
borescope ports and repeat the same steps
.
All the fuel nozzles must be examined in turn and
assessed against the AMM serviceability limits.
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