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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
10 O'CLOCK BORESCOPE PORT (S15) SEE B 
MANIFOLD FUEL 
S18 SEE  A 
IGNITER LEFT SPARK PORT (S11) 
BORESCOPE 3 O'CLOCK PORT (S13)  BORESCOPE 1 O'CLOCK PORT (S12) SEE B  LEFT SIDE 
S20 SEE  A 
IGNITER PORT (S10) RIGHT SPARK 
S22  S21  S17 SEE  A  BORESCOPE 6 O'CLOCK PORT (S14) SEE B  S9 S2 THRU RIGHT SIDE 
Figure 606C (Sheet 1) LPT Stage 1 Nozzle and Combustion Case Borescope Plug 

E37313
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////

COMBUSTOR BORESCOPE PLUG

1119803-00-C
LPT Stage 1 Nozzle and Combustion Case Borescope Plug Figure 606C (Sheet 2)
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E37422
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
The Combustion Chamber and HPT NozzLe Inspection After a Birdstrike
___________________________________________________________________
 TASK 72-00-00-216-024-C00
 6.  The Combustion Chamber Inspection After a Birdstrike
____________________________________________________
 A.  General
 (1)  Do not use this procedure unless it is necessary to trouble-shoot for a birdstrike (AMM 71-00-47/101).
 B.  References
 (1)  
AMM 71-00-02/401, Power Plant

 (2)  
AMM 71-00-47/101, Troubleshooting

 (3)  
AMM 73-11-04/401, Fuel Nozzle

 (4)  
AMM 74-21-02/401, Spark Igniters

 C.  Access
 (1)  Location Zones
 506 Left Engine
 606 Right Engine

 D.  Do the Combustion Chamber Inspection (After a Birdstrike)
 S 846-025-C00
 (1)  
If not already done, do the procedure to prepare for the borescope inspection.

 S 016-033-C00

 (2)
Remove the right and left side spark igniters (AMM 74-21-02/401).

 S 016-034-C00

 (3)  
Remove the borescope plugs from the combustor (Fig. 606C) that follow:

 NOTE: When you use a fiberscope, it is not necessary to remove all
____ of the borescope plugs and spark igniters.
 (a)  
10 o'clock

 (b)  
1 o'clock

 (c)  
3 o'clock

 (d)  
6 o'clock

 S 216-035-C00
 (4)  Do a borescope or fiberscope inspection of the nozzle and swirlers as follows:
 (a)  Put the borescope or fiberscope probe through one of the ports.
 1)  Look at the swirler and nozzle area in a clockwise and counterclockwise direction.
 NOTE: When you use a rigid borescope, you will only see
____ one swirler and two deflectors in a clockwise or counterclockwise direction.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
The Combustion Chamber and HPT NozzLe Inspection After a Birdstrike
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