(2) Put the access platform

 Subtask 72-42-00-040-057
 C. Make the thrust reverser unserviceable for maintenance (Ref. TASK 78-30-00-481-041)
 Subtask 72-42-00-010-075
 D. Open the thrust reverser doors: (Ref. TASK 78-36-00-010-040)
 FOR 1000EM1
 451AL, 452AR
 FOR 1000EM2
 461AL, 462AR

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 4. Procedure
_________
 (Ref. Fig. 606/TASK 72-42-00-991-304)
 Subtask 72-42-00-010-073
 A. Remove parts before borescope inspection.
 (1) Select fuel nozzles to remove that will allow access to the outer liner area to be inspected.

 (2) Remove the fuel nozzles (Ref. TASK 73-11-40-000-002)

 Subtask 72-42-00-290-061
 B. Do a borescope inspection.
 (1) Use the MONITOR, RESOLUTION BORESCOPE (856A1323G01) to make sure borescope and the ligth source are serviceable. See the Non Destructive Test Manual for this procedure (Ref. NTM 720000).

 (2) Connect the fiber ligth cable to the FIBERSCOPE SET (856A1321) and to the port on the BORESCOPE - LIGHT SOURCE SET (856A1322P03, P04, or P07).

 (3) Put the fiberscope of the FIBERSCOPE SET (856A1321) into the fuel nozzle ports and turn on the light source of BORESCOPE - LIGHT SOURCE SET (856A1322P03, or P04).

 (4) Adjust the borescope equipment to obtain maximum clarity of view.

 (5) Inspect the following:

 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Outer side of outer liners for:
 A. Outer liner axial Any number if cracks do Reinspect the combustor in
 crack locations not extend through more 750 cycles. See limit R than one of ribs 4, 5, extensions (Ref. TASK 72-R and 6 if rib 1 is not 00-00-200-025).
 cracked through.
 NOTE : When applying limits, the dome band is interpreted as a panel.
____
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 Outer Liner (Outer)
 Figure 606/TASK 72-42-00-991-304

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 (6) When the inspection is complete, turn off the light source and remove the fiberscope.
 Subtask 72-42-00-410-069
 C. Install the fuel nozzles (Ref. TASK 73-11-40-400-002).
 5. Close-up
________ Subtask 72-42-00-410-070
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 (2) Close the thrust reverser doors: (Ref. TASK 78-36-00-410-040) FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR

 (3) Remove the access platform(s). Subtask 72-42-00-440-053
 B. Make the thrust reverser serviceable after maintenance (Ref. TASK 78-30-00-081-041).
 Subtask 72-42-00-410-072
 C. Close Access
 (1) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (2) Remove the warning notice(s).

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 TASK 72-42-00-290-005

 Inspection of the Combustion Chamber and HPT Nozzle Following a Birdstrike/FOD
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
 No specific access platform 1 m (3 ft. 3 in.)
 No specific Torque Wrench : range 36.00 to 220.00 lbf.in

 (0.40 to 2.60 m.daN)
 856A1320 1 BORESCOPE KIT
 856A1322 1 BORESCOPE - LIGHT SOURCE SET
　
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