EFFECTIVITY
ALL CFM56 ENGINES
CFMI PROPRIETARY INFORMATION
CFM56-ALL
TRAINING MANUAL
COMBUSTION
CHAMBER
BORESCOPE
INSPECTION
Page 104
Sep 03
COMBUSTION SECTION
(ALL) :
Single Annular Combustor (SAC).
The combustor is inspected through ports S12, S13, S14,
S15 and igniter ports S10 and S11, using probes 1, 2, 3
or 4.
Inspect for defects in the following 3 areas :
- outer liner.
- inner liner.
- dome assembly.
Probe 2 (yellow) is recommended for general viewing of
the combustion chamber, especially the dome area.
Probe 3 (green) is recommended for viewing
circumferentially around the combustion chamber and
the inner liner near the borescope ports.
Probe 4 (blue) is recommended for viewing the outer liner
around the borescope port.
Probe 1 (black, hi-mag) is recommended for viewing the
aft end of the inner and outer liners. It is also used for
evaluating defects that were found when using probes 2,
3, or 4.
Note: If any defects are found during this inspection, do a
complete inspection of the combustion chamber. Map the
defects on the special reporting form.
TOC
