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S 016-011-N00
 (17)
 Remove segment No. 7 of the fan exit lining (AMM 72-34-03/401).

 S 216-047-N00

 (18)
 ENGINES WITHOUT PHASE 3; Visually examine the control valve for HPC secondary flow and the TVBCA valve solenoid to see if they are attached correctly.

 S 216-048-N00

 (19)
 ENGINES WITH PHASE 3; Visually examine the TVCA valve and the TVBCA/TVCA valve solenoids to see if they are attached correctly.

 (a)  
If the solenoid is loose, tighten the bolts that hold the solenoid (AMM 75-33-03/401).

 S 416-013-N00
 (20)
 Install segment No. 7 of the fan exit lining (AMM 72-34-03/401).

 F.
Return the Aircraft to its Usual Condition

 S 416-037-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Close the thrust reversers (AMM 78-31-00/201).

 S 416-038-N00

 (2)  
Close the core cowl panels (AMM 71-11-06/201).

 S 416-039-N00

 (3)  
Close the fan cowl panels (AMM 71-11-04/201).

 S 446-040-N00

 (4)  
Do the activation procedure for the thrust reversers
 (AMM 78-31-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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TASK 75-24-00-206-043-N00
 3. Do a Check of the TCC Control System
____________________________________
 A. References
 (1)
AMM 71-11-04/201, Fan Cowl Panels

 (2)
AMM 71-11-06/201, Core Cowl Panels

 (3)
AMM 75-24-00/501, Turbine Cooling System

 (4)
AMM 75-24-03/401, HPT Case Cooling Air Shutoff Valve

 (5)
AMM 75-24-04/401, LPT Case Cooling Air Shutoff Valve

 (6)
AMM 75-24-05/401, Turbine Case Cooling Air Valve Actuator

 (7)
AMM 75-24-11/401, Turbine Case Cooling Air Valve Control Cable

 (8)
AMM 78-31-00/201, Thrust Reverser System

 (9)
IPC 75-24-00 Fig. 5

 (10)
 IPC 75-24-00 Fig. 10

 (11)
 IPC 75-24-00 Fig. 15

 (12)
 IPC 75-24-03 Fig. 1

 (13)
 IPC 75-24-03 Fig. 5

 (14)
 IPC 75-24-03 Fig. 10

 (15)
 IPC 75-24-04 Fig. 1

 (16)
 IPC 75-24-05 Fig. 1

 (17)
 IPC 75-24-07 Fig. 1

 (18)
 IPC 75-24-09 Fig. 1

 (19)
 IPC 75-24-09 Fig. 5

 (20)
 IPC 75-24-11 Fig. 1

 (21)
 IPC 75-24-51 Fig. 2

 (22)
 IPC 75-33-04 Fig. 1

 B.
Access

 (1)  
Location Zone
 412 Engine 1 - HPC Case to LPT Case
 422 Engine 2 - HPC Case to LPT Case
 432 Engine 3 - HPC Case to LPT Case
 442 Engine 4 - HPC Case to LPT Case

 (2)  
Access Panel 415 and 416 Thrust Reverser Halves - Engine 1 425 and 426 Thrust Reverser Halves - Engine 2 435 and 436 Thrust Reverser Halves - Engine 3 445 and 446 Thrust Reverser Halves - Engine 4

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
C.  Prepare to Do a Check of the TCC Control System
 S 046-042-N00 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
　
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