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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
 72-23-00-991-308 Fig. 601

R 72-23-00-991-310 Fig. 603 R 72-23-00-991-328 Fig. 604 R 72-23-00-991-325 Fig. 605 R 72-23-00-991-326 Fig. 606 R
 3. Job Set-up
__________
 Subtask 72-23-00-941-080
 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 72-23-00-010-090
 B. Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 Subtask 72-23-00-040-067
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
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 Subtask 72-23-00-010-102

 D. Open the thrust reverser cowl doors (Ref. TASK 78-36-00-010-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
 4. Procedure
_________
R (Ref. Fig. 601/TASK 72-23-00-991-308, 603/TASK 72-23-00-991-310)
 Subtask 72-23-00-210-058
 A. Detailed Visual Inspection of the Engine Inlet, Fan Blades, Fan Outlet and Abradable Material
 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Inlet case for:
 (Ref. Fig. 601/TASK
 72-23-00-991-308)

 A. Cracks  Not permitted.
 B. Cracks or crazing  Any amount.
 in the rubber of
 AGB mount

 C. Nicks  On area A, if 0.012 in. 50 cycles serviceable (0,30 mm) max. depth and extension is allowed.
 0.046 sq.in. (30 sq.mm) max. surface. On area B, if 0.008 in. (0,20 mm) max. depth and
 0.046 sq.in. (30 sq.mm) max. surface. On area C, if 0.012 in. (0,30 mm) max. depth and
 0.077 sq.in. (50 sq.mm) max. surface
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 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
D. Scratches  0.008 in. (0,20 mm) max. depth and 1.968 in. (50 mm) max. length 50 cycles serviceableextension is allowed.
 E. Dents  On area A, if 0.002 in. (0,5 mm) max. depth and 0.124 sq.in. (80 sq.mm) max. surface. 50 cycles serviceableextension is allowed.
 On area B, if 0.008 in. (0,20 mm) max. depth and 0.124 sq.in. (80 sq.mm) max. surface.
 On area C, if 0.02 in. (0,5 mm) max. depth and 0.155 sq.in. (100 sq.mm) max. surface.
 F. Wear  On area A and B, if 0.004 in. (0,10 mm) max. depth and 0.465 sq.in. (300 sq.mm) max. surface. 50 cycles serviceableextension is allowed.
 On area C, if 0.004 in. (0,10 mm) max. depth and 0.62 sq.in. (400 sq.mm) max. surface.
 2. Inlet case on B1 and
 B3 upstream bracket location for:
 (Ref. Fig. 601/TASK 72-23-00-991-308)
 A. Wear of flanges holes oversized  If 0.315 in. (8 mm) max. width and 0.6 in. (15 mm) max. length. Remove the inlet case.
 B. Wear, fretting, chafing of flange holes.  If 0.008 in. (0,20 mm) max. depth or If 0.02 in. (0,5 mm) max. depth and 0.155 sq.in. (100 sq.mm) max. surface. 10 cycles serviceableextension is allowed.

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