B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
70-51-00-230-002 Fluorescent-Penetrant Inspection-Portable-Water
 Washable 71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 72-00-00-200-025 Over-Serviceable-Limit Extensions 72-41-00-300-002 Repairs of the Combustion Case Assembly 78-30-00-081-041 Make the Thrust Reverser Serviceable after
 Maintenance 78-30-00-481-041 Make the Thrust Reverser Unserviceable for
 Maintenance 78-36-00-010-040 Opening of the Thrust Reverser Doors 78-36-00-410-040 Closing of the Thrust Reverser Doors 72-41-00-991-300 Fig. 601
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 3. Job Set-up
__________
 Subtask 72-41-00-941-052
 A. Safety Precautions
 (1) On the center pedestal, on the ENG panel 115VU:

 (a) Put a warning notice to tell persons not to start the engine.

 (2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.

 (3) On the overhead maintenance panel 50VU:

 (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

 (b) Put a warning notice to tell persons not to energize the FADEC 1(2).

 Subtask 72-41-00-010-054
 B. Get Access
 (1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (2) Put an access platform in position.

 Subtask 72-41-00-040-052
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 72-41-00-010-056
 D. Open the thrust reverser cowl doors: (Ref. TASK 78-36-00-010-040)
 FOR 1000EM1
 451AL, 452AR
 FOR 1000EM2
 461AL, 462AR

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 4. Procedure
_________
 (Ref. Fig. 601/TASK 72-41-00-991-300)
 Subtask 72-41-00-230-052
 A. Do a fluorecent penetrant inspection.
 (1) Do a fluorescent penetrant inspection of actual or suspected cracks in the combustion case assembly (Ref. TASK 70-51-00-230-002).
 Subtask 72-41-00-210-051
 B. Do a visual inspection.
 (1) Do the visual inspection that follows:
 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Combustion casing body for :
 - Cracks  Not serviceable

 - Nicks, scores and Any number 0.03 in.

 scratches  (0.76 mm) deep after
 removal of high metal

 - Dents  Any number 0.10 in.

 (2.54 mm) deep after removal of high metal

 - Buckling or distortion  Not serviceable
 because of
 overtemperature

 - Hot spots  Any number, if metal not

 (discoloration)  crazed. No cracks are
 permitted.

 2. Combustion casing forward flanges for :
 - Bolt hole cracks that  One crack per hole, 2
 extend radially cracks per frame
 outward

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 Combustion Case Assembly
 Figure 601/TASK 72-41-00-991-300

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 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
- Bolt hole cracks that  Not serviceable extend radially inward
3. Combustion case midflange for :
 - Broken bolts  One broken bolt with a minimum of 5 bolts that are not broken on both sides of the broken bolt. No more than 2 broken bolts in any group of 20.
 4. Combustion casing aft flange for :
 - Bolt hole cracks that extend radially outward
　
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