EFFECTIVITY
ALL CFM56 ENGINES
CFMI PROPRIETARY INFORMATION
CFM56-ALL TRAINING MANUAL
FAN AND
BOOSTER
BORESCOPE
INSPECTION
Page 82
Sep 03
FAN AND BOOSTER
(-2, -3, -5A, -7B) :
To inspect the booster, unplugged borescope port S0
can be accessed with a probe installed on a long right
angle adapter.
(-5B, -5C) :
To inspect the booster, unplugged borescope port S03
can be accessed with a probe installed on a long right
angle adapter.
(ALL) :
The port is located between 2 OGV’s, at approximately
the 3 o’clock position.
Insert the No 2 (yellow) borescope probe into the port
and go through the 2 cases to reach the inspection area.
Depending on the conguration of the long right angle
extension, it is possible to turn the probe to change the
direction of view and adjust the focus directly from the
extension.
The following components are visible:
- Rotor stage 3 trailing edge.
- Rotor stage 4 leading edge.
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