EFFECTIVITY
ALL CFM56 ENGINES
CFMI PROPRIETARY INFORMATION
CFM56-ALL
TRAINING MANUAL
REQUIREMENTS
BORESCOPE INSPECTION
Page 51
Sep 03
ENGINE
LOCATION
PORT No.
PORT SIZE
(MM)
WRENCH
SIZE
AREAS VIEWED
WITHOUT MOTORING TIME TO
REACH
-2/-3/-5A
-5B/-5C
-7B
100°F(38°C)
200°F(93°C)
COMBUSTION
CASE
S10
S10
S10
10 MM
1 1/4 HEX
COMBUSTOR
3.5 hrs
2.0 hrs
HPT NOZZLE L/E & T/E
4.5 hrs
3.0 hrs
S11
S11
S11
10 MM
1 1/4 HEX
HPT BLADE L/E
4.5 hrs
3.0 hrs
HPT SHROUD
4.5 hrs
3.0 hrs
S12
S12
S12
10 MM
7/8 HEX
COMBUSTOR
3.5 hrs
2.0 hrs
S13
S13
S13
10 MM
7/8 HEX
COMBUSTOR
3.5 hrs
2.0 hrs
S14
S14
S14
10 MM
7/8 HEX
AND
S15
S15
S15
10 MM
7/8 HEX
HPT NOZZLE L/E
4.5 hrs
3.0 hrs
S17
S16
S16
8 MM
7/8 HEX
HPT BLADES T/E
4.5 hrs
3.0 hrs
S18
S17
S17
8 MM
7/8 HEX
LPT STAGE 1 L/E
4.5 hrs
3.0 hrs
LPT CASE
S20
S18
S18
10 MM
9/16 HEX
STAGE 1 T/E
4.5 hrs
3.0 hrs
STAGE 2 L/E
4.5 hrs
3.0 hrs
S21
S19
S19
10 MM
9/16 HEX
STAGE 2 T/E
STAGE 3 L/E
4.5 hrs
2.0 hrs
S22
S20
S20
10 MM
9/16 HEX
STAGE 3 T/E
STAGE 4 L/E
4.5 hrs
2.0 hrs
-5C ONLY
--
S21
--
10 MM
9/16 HEX
STAGE 4 T/E
4.5 hrs
2.0 hrs
STAGE 5 L/E
4.5 hrs
2.0 hrs
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