EFFECTIVITY
ALL CFM56 ENGINES
CFMI PROPRIETARY INFORMATION
CFM56-ALL
TRAINING MANUAL
REQUIREMENTS
BORESCOPE INSPECTION
Page 62
Sep 03
EQUIPMENT CHECKS
(ALL) :
The borescope resolution monitor.
Before starting any inspection inside the engine, the
inspector should ensure that the viewing definition of
the rigid and flexible borescope probes is as precise as
possible.
Borescope resolution monitor 856A1323 allows both rigid
and flexible probes to be checked against a calibrated
display.
The male end of the light bundle is inserted into a light
source and the female end is connected to the male
connector on the resolution monitor.
The rigid or flexible probe is inserted and hand-tightened
into a clamping device located on the arm on the
resolution monitor. The probe’s lens faces a resolution
target.
The light intensity is adjusted to obtain the best view
and the borescope probe is aligned to ensure that the
resolution target is centered in the field of view.
If only part of the target is illuminated, then the borescope
probe is not serviceable for engine inspection.
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